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'15 ELEPHANTS, 12 OF THEM JEWISH STAMPEDED OVER HIM IN A VIOLENT RAMPAGE CALLED Christmas. TODAY CHRISTMAS IS A CELEBRATION OF THE GREAT STAMPEDE. SANTA WEARS RED TO REPRESENT JESUS' CRUSHED BODY. THIS IS A FUN TIME WHERE MANY FUN TIME IS HAD BY ALL. '

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Essentially by counting. Addition and subtraction were known more than 4000 years ago. The logic of multiplication and division were also known, but were performed by either adding or subtraction.

Modern arithmetic was not possible until the invention of positional notation and the concept of zero came into being ... usually ascribed to Arab mathematicians.

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15y ago
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Q: How was calculation done during ancient time?
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