9 10 x 3 1 5 July 8, 2019 16 32 64 128 1 5 x 10 9 x 3 4 2x 9 10 2x 3 2x 1 x 5 1 x 1 3 5x 1 10 9 9+10 = 11 9/10 x 3 9 1 x 10-31