E.g.
1376 x 5 = 6880
1 3 3
1376
x 5
-----------
6880
5x6= 30
5x7= 35+3 =38
5x3 =15+3 =18
5x1 = 5+1 =6
30 - the three and add it onto 7x5 +3 , 5x3 +3 and 5x1 +6 = 6880
My next step is to do harder questions like 136548572 x 7 =
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