7 9 2 5 1 3 July 8, 2019 16 32 64 128 7 9 2 3x 1 9x 5 3 7 * 9 x 2 3x 1 5 * 6 1 7 9 х 2 2 5 1 3 5 7 m 2 )- 5 1 3 21m 9 )- 6 7 9 9 5 2 4x2 4 5 1 8 3x100 7 1 3 divided by 9 2 5 1 x 25 x 6 x 7 9 2 5 3x 15 1 3 5 7 9 2 x 1 225