13 5 x3 7 8 July 8, 2019 16 32 64 128 13 5 x 3 7 8 13 5 x3 7 16 8 5 3 13 x 7 5 13 4 8 5 13 7 - * 13 5 x 7 5 x 7 = 35 13/5 x 5 13 5 x 8
