3 x 0 9 1 8 July 8, 2019 16 32 64 128 3 x 9 x 1 810 0 3 x 2 9 x 1 810 0 8 9 x 3 1 8 0 7 3 1 4 x 9 10 0 8 3 x 3 = 9 3 x 0 0 3 x = 9