come si fa 3425 x 60023 ?

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