Before modern electronic cash registers appeared in the 1950s, businesses used mechanical cash registers that used gears to add the figures. NCR (National Cash Register) started making mechanical units in 1884. Before that sales were commonly recorded in ledgers, books with rows and columns (like modern spreadsheets) that recorded each sale, whether money was owed or paid, and totalled by hand at the end of the day.
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Before coins, and even after, people would barter. A farmer may have given vegetables for cloth, a miller may have milled flour in exchange for meat from someone who had cattle. - Many people would trade with each other, sometimes even giving their labour in exchange for material items.
sexual favors. You scratch my back i scratch ur's Arrr Only joking, probally exchange goods like food or stuff........................no it's called barter