Example: 57*43
Divide 57 by 2 until you reach 1 - Multiply 43 by 2
57 43
28 86
14 172
7 344
3 688
1 1376
Discard any even numbers in the left column ie - 28, 14
Add remainder in right column - 43,344, 688, 1376 = 2451
57*43 = 2451
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