come si fa 4534 x 5345 ?

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