Willsfords arithmetick, naturall, and artificiall: or, decimalls. Containing the science of numbers, digested in three books. Made compendious and facile for all ingenious capacities, viz: merchants, citizens, sea-men, accomptants, &c. Together with the theorie and practice united in a sympathetical proportion betwixt lines and numbers, in their quantitites and qualities, as in respect of form, figure, magnitude and affection: demonstrated by geometrie, illustrated by calculations, and confirmed with variety of examples in every species. / By Thomas Willsford, Gent.

How to reduce Integers of any Denomination, into Integers of a lesse Species. Paradigma 11.

Multiply the Integers given, by the known parts; that is, the number of that denomination, which made that an Integer, the product will be the thing required: as for example, 1145 li. is to be reduced into farthings; but first into crowns, 4 making one pound sterling; then 1145 li. will be reduced to 4580; one crown being 5 shillings, multiply that

by 5; or 1145 li. the summe given by 20 s. the product in either will be 22900, that multiplied by 12 produceth 274800 pence and that by 4, the number of farthings in a penny the totall product is 1099200; the number of farthings contained in 1145 li. which if it had been multiplied by 960, the farthings in 1 li. sterling it must have produced the same, and so the like of any others at one opera∣tion, if you please.