18 5 x 3 2 July 8, 2019 16 32 64 128 18 x 5 81 2 3 16 4 18 x 5 3 2 18 5x 3 2x 5 x 6 3 18 3 2x 20 5 x 18 3 5 6 x )- 2 3 13 18 18 3 (- 5 x 4 (- 2 1 5 x 3 2 2 18 7 18 x 5 12 3 2 3 18 5 x 25 3 18 7 x 5 3 2 5 x 3 )= 18 2x 18 2 5⁄6 5 x 3 18 3 x 5 )= 24 18 3 5 x 32 2