Treviso is particularly significant because it is the earliest-know printed mathematics book in Europe. It also promoted the use of the Hindu Arabic numeral system and computational algorithms. Because commerce of the time began to have a wide international component, prospective businessmen had urgent needs to become facile with mathematics. Today, scholars are fascinated by Treviso because it provides a portal into the methods of teaching mathematics in fifteenth-century Europe. Similarly, because the problems involve calculating payment for exchanging goods, fabric cutting, saffron trading, alloy mixtures in coins, currency exchange, and calculating shares of profits derived from partnerships, readers come to understand the contemporary concerns with respect to cheating usury, and determination of interest charges