3 x 1 10 7 x 1 100 July 8, 2019 16 32 64 128 3 x 1000 5 x 10 7 x 1 100 2 x 10 7 x 1 10 3 x 1 100 100 - 3 x 7 + 1 3 x 10 - 7 1 3 x 100