A complete theory of fractions, which differs little frommodern, was outlined in the first textbook on arithmetic, written in 1701 by Leonti Filippovich Magnitsky.
A theory ephelele kwamafrakshini, ukungathandi namuhla, ukuthi ebekwe ebhukwinitifundvo kuqala ku izibalo, abhalwe 1701, Leontiem Filippovichem Magnitskim.