1 4 5 7 15 July 8, 2019 16 32 64 128 3x 4 5 3x 1 6 7 15 7 15x 1 5 4 10 4/5 divided by 1 7/15 1 2 3 4 c 5 6 7 15 4 5 1 4 x 7 15
