come si fa 56234 x 2331 ?

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