the_o doctrine_n of_o decimal_a arithmetic_n simple_a interest_n etc._n etc._n as_o also_o of_o compound_v interest_n and_o annuity_n general_o perform_v for_o any_o time_n of_o payment_n or_o rate_v of_o interest_n by_o help_n of_o a_o particular_a table_n of_o forbearance_n of_o 1_o l._n principal_n with_o enlarge_v rule_n former_o abridge_v for_o portability_n in_o a_o letter_n case_n by_o john_n collins_n accountant_a philomath_n and_o since_o his_o death_n both_o make_v public_a by_o j._n d._n london_n print_v by_o r._n holt_n for_o nath._n ponder_n at_o the_o peacock_n in_o the_o poultry_n near_o the_o stock-market_n 1685._o the_o epistle_n to_o the_o reader_n courteous_a reader_n it_o be_v the_o accustom_a way_n to_o dedicate_v book_n to_o some_o honourable_a person_n that_o thereby_o the_o book_n may_v have_v the_o great_a esteem_n this_o book_n need_v no_o such_o dedication_n for_o the_o name_n of_o the_o author_n which_o will_v never_o die_v ingenious_a mr._n john_n t_v at_o the_o end_n of_o the_o book_n whereby_o the_o reader_n may_v see_v it_o no_o way_n derogate_v from_o the_o old_a copy_n and_o thereby_o may_v see_v how_o full_a and_o plain_a the_o new_a rule_n be_v in_o comparison_n to_o the_o old_a this_o book_n be_v a_o fit_a companion_n for_o all_o gentleman_n merchant_n scrivener_n and_o other_o tradesman_n that_o deal_n much_o in_o lend_v of_o money_n upon_o interest_n mortgage_n buy_v of_o estate_n either_o in_o fee_n copy_n or_o lease_n hold_v annuity_n rend_a charge_n forbearance_n of_o money_n discompt_n or_o any_o other_o way_n concern_v interest_n etc._n etc._n when_o any_o person_n do_v perfect_o understand_v the_o large_a rule_n he_o may_v if_o he_o please_v lay_v by_o the_o book_n and_o only_o use_v the_o compendium_n with_o the_o table_n to_o be_v carry_v about_o in_o a_o letter_n case_n and_o i_o hope_v in_o peruse_v this_o small_a treatise_n the_o reader_n will_v find_v that_o which_o will_v give_v he_o satisfaction_n both_o as_o to_o the_o rule_n and_o table_n you_o j._n d._n decimal_a arithmetic_n a_o decimal_n fraction_n be_v such_o a_o one_o who_o denominator_fw-la be_v understand_v and_o not_o express_v and_o be_v a_o unit_fw-la with_o as_o many_o cipher_n follow_v it_o as_o there_o be_v figure_n and_o cipher_n in_o the_o numerator_n corollary_n wherefore_o the_o annex_v of_o cipher_n towards_o the_o right_a hand_n of_o a_o decimal_n alter_v not_o its_o value_n a_o decimal_n fraction_n of_o coin_n may_v be_v easy_o value_v without_o the_o help_n of_o table_n for_o each_o unit_fw-la in_o the_o first_o place_n be_v in_o value_n 2_o s._n 5_o in_o the_o second_o place_n 1_o s._n and_o the_o rest_n farthing_n but_o if_o they_o exceed_v 25_o 48_o there_o must_v be_v two_o farthing_n abate_v example_n so_o ,854_o be_v in_o value_n 17_o s._n 1_o d._n ,418_o 8._o 4½_n addition_n and_o substraction_n in_o decimal_n be_v the_o same_o as_o in_o whole_a number_n keep_v the_o place_n of_o units_n just_a under_o each_o other_o multiplication_n in_o decimal_n be_v the_o same_o as_o in_o common_a arithmetic_n save_v as_o many_o decimal_a part_n as_o be_v in_o both_o multiplyer_n so_o many_o must_v be_v cut_v off_o from_o the_o product_n which_o if_o it_o have_v not_o so_o many_o place_n the_o defect_n be_v to_o be_v supply_v with_o cipher_n towards_o the_o left_a hand_n division_n be_v the_o same_o as_o in_o whole_a number_n without_o regard_n to_o decimal_n till_o the_o work_n be_v do_v and_o then_o use_v the_o converse_n of_o the_o rule_n for_o multiplication_n viz._n so_o many_o decimal_n as_o be_v in_o the_o dividend_n so_o many_o there_o must_v be_v in_o the_o divisor_n and_o quote_v and_o if_o there_o be_v not_o so_o many_o the_o quotient_n must_v be_v supply_v with_o cipher_n towards_o the_o left_a hand_n simple_a interest_n prop._n 1._o to_o compute_v the_o interest_n for_o a_o day_n 6_o 365_o be_v the_o interest_n of_o 100_o l._n for_o a_o day_n the_o 1_o 100_o whereof_o be_v the_o interest_n of_o 1_o l._n for_o a_o day_n viz._n 6_o 36500_o or_o 6_o with_o cipher_n put_v on_o at_o pleasure_n divide_v by_o 36500_o be_v 000164383_o the_o interest_n of_o 1_o l._n for_o a_o day_n prop._n 2._o the_o decimal_n of_o day_n in_o the_o table_n at_o the_o end_n will_v serve_v to_o find_v the_o amount_v of_o 1_o l._n simple_a interest_n of_o any_o rate_n for_o any_o time_n under_o 365_o day_n or_o a_o year_n if_o you_o take_v the_o decimal_n for_o one_o day_n or_o more_o and_o multiply_v that_o by_o 06._o 7._o 8._o etc._n etc._n per_fw-la cent._n or_o any_o other_o rate_n the_o product_n will_v give_v the_o interest_n of_o one_o pound_n for_o a_o day_n or_o more_o under_o 366_o day_n at_o simple_a interest_n example_n 1._o the_o decimal_n for_o a_o day_n be_v ,002739726_o  _fw-fr  _fw-fr ,06_o the_o interest_n of_o 1_o l._n for_o a_o day_n ,00016438356_o example_n 2._o the_o decimal_n of_o 121_o day_n be_v ,331506849_o  _fw-fr ,06_o the_o interest_n of_o 1_o l._n for_o 121_o day_n ,01989041094_o ,002739726_o decimal_n for_o a_o day_n ,07_o per_fw-la cent._n ,00019178082_o the_o interest_n of_o 1_o l._n for_o a_o day_n at_o 7_o l._n per_fw-la cent._n and_o so_o of_o any_o other_o rate_n of_o interest_n prop._n 2._o forbearance_n of_o money_n at_o simple_a interest_n the_o interest_n of_o 1_o l._n for_o any_o number_n of_o day_n at_o what_o rate_n of_o interest_n you_o please_v be_v first_o find_v by_o the_o first_o proposition_n that_o product_v multiply_v by_o the_o sum_n propound_v give_v the_o interest_n thereof_o for_o the_o time_n require_v example_n to_o know_v the_o amount_v of_o 140_o l._n for_o 121_o day_n at_o 6_o l._n per_fw-la cent._n simple_a interest_n the_o decimal_n of_o 1_o l._n for_o 121_o day_n 1,019890410_o multiply_v by_o 140_o which_o be_v 142_o l._n 15_o s._n 8_o d._n 40795616400_o  _fw-fr 1,019890410_o  _fw-fr 142,784657400_o prop._n 3._o rebate_v or_o the_o present_a worth_n of_o money_n due_a hereafter_o find_v the_o interest_n of_o 1_o l._n for_o the_o time_n give_v as_o in_o prop._n 1._o and_o thereto_o add_v a_o unit_fw-la by_o it_o divide_v any_o other_o sum_n propound_v and_o the_o quote_v be_v its_o present_a worth_n example_n if_o 142_o l._n 15_o s._n 8_o d._n be_v due_a at_o the_o end_n of_o 121_o day_n what_o be_v it_o worth_a in_o ready_a money_n worth_a in_o ready_a money_n 140_o l._n at_o 6_o l._n per_fw-la cent._n simple_a interest_n and_o may_v be_v do_v for_o any_o other_o rate_n of_o interest_n work_v by_o the_o first_o proportion_n and_o this_o former_a rule_n prop._n 4._o equation_n of_o payment_n by_o prop._n 3._o compute_v all_o the_o present_a worth_n and_o then_o by_o proportion_n if_o all_o those_o present_a worth_n amount_v to_o the_o total_a of_o all_o those_o payment_n what_o do_v one_o pound_n amount_v to_o in_o the_o say_a time_n from_o the_o result_n subtract_v a_o unit_fw-la the_o remainder_n be_v the_o interest_n of_o 1_o l._n for_o the_o time_n seek_v which_o divide_v by_o the_o interest_n of_o 1_o l._n for_o a_o day_n the_o quote_v be_v the_o number_n of_o day_n seek_v if_o you_o be_v to_o aequate_v a_o annuity_n at_o simple_a interest_n i_o presume_v a_o compendium_n may_v be_v find_v in_o mengolus_fw-la his_o arithmetical_a quadrature_n a_o book_n i_o never_o see_v who_o it_o be_v probable_a by_o a_o compendium_n get_v the_o fact_n of_o a_o arithmetical_a progression_n and_o add_v fraction_n that_o have_v a_o constant_a numerator_n and_o a_o arithmetical_a progression_n for_o their_o denominator_n so_o much_o for_o simple_a interest_n my_o design_n be_v more_o for_o the_o explanation_n of_o the_o table_n for_o compound_v interest_n and_o annuity_n of_o compound_v interest_n the_o original_a thereof_o be_v derive_v from_o simple_a interest_n for_o if_o it_o be_v lawful_a to_o take_v interest_n at_o all_o than_o it_o be_v as_o lawful_a to_o put_v out_o the_o interest-money_n to_o use_v as_o the_o principal_a for_o ease_v in_o calculate_v question_n that_o concern_v compound_v interest_n arithmetician_n do_v usual_o frame_v table_n in_o store_n to_o show_v what_o 1_o l._n principal_a forbear_v at_o any_o rate_n for_o any_o determinate_a time_n shall_v amount_v unto_o the_o construction_n whereof_o be_v by_o the_o golden_a rule_n as_o follow_v as_o 100_o l._n principal_n be_v to_o the_o amount_v thereof_o at_o the_o year_n end_n so_o be_v a_o unit._n to_o its_o amount_v to_o wit_n so_o be_v 1._o 1_o 06._o if_o 6_o be_v the_o rate_n of_o interest_n than_o it_o will_v hold_v again_o for_o the_o next_o year_n as_o 1._o 1_o 06_o so_o 1_o 06_o to_o 1_o 1236_o the_o principal_a and_o interest_n at_o the_o second_o year_n now_o because_o a_o unit_fw-la be_v in_o the_o first_o place_n which_o do_v not_o divide_v it_o follow_v that_o the_o second_o