How might the use of arabic numerals be connected to islamic trade

Arabic numerals is frequently capitalized and sometimes written in lower case. Arabic numerals was used extensively than trade, buying and selling commodities in calculating quantities, weights, volumes, lengths and prices between sellers and buyers particularly exporting and importing yet exchanging. Indians have surpassed Arabs in agriculture and industry while Arabs were most master in trade and arithmetic. Hence the use of numerals necessitated conversance with and practicing of an arithmetic science or dense practice of trade.

Who it was like back then