Interest Tables at Five Per Cent; in which are Shown the Interest on Any Sum from One Pound to Ten Thousand Pounds, for Any Lenght of Time, from One Day to Three Hundred and Sixty-five Days ... There is Likewise Included, a Series of Tables for Reducing Interest at Five Per Cent to Any Other Rate ... To These are Added Tables for Calculating Commissions on Sales of Goods, Or Banking Accounts, from One-eighth to Five Per Cent