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Mariya ðŸŽ
@mariyamay
Around 2300 to 2700 years before Christ, the first abacus was used by the Sumerians. According to the old belief of Babylonian scientists, like "Carruccio" the abacus was used for addition and subtraction operations and complex calculations.
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gia ðŸŽ
@giaray2
Abacus is an ancient calculator that is used a lot these days ðŸŽ
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