The Russian peasant algorithm for multiplying 27 68 follows. (Disregard remainders when halving.)
In the “Halves” column, choose the odd numbers marked by an arrow. In the “Doubles” column, circle the numbers paired with the odds from the “Halves” column. Add the circled numbers.
Try this algorithm for 17 63.
We need at least 10 more requests to produce the solution.
0 / 10 have requested this problem solution
The more requests, the faster the answer.