come si fa 256421 x 570 ?

1 2 4 6 5 2 0 7 5 x = 0 0 0 0 0 0 7 4 1 9 2 4 4 9 3 7 1 5 0 1 1 2 2 3 8 2 2 1 1 1 0 7 9 9 5 1 6 4 1
x