2 8 x 7 4 July 8, 2019 16 32 64 128 2 3 8 x 4 7 2 1 8 x 4 7 2x 2 x 8 4 7 2 4 8 x 7 1 5 2 x 8 )+ 7 3 3x 4 )+ 3 4 2 8 x 9 7 3 X 7 4 )+ 2 8 9 1 2 7 8 x 3 1 4 7 8 x 2 )= 4x 71 5 x 8 2 x 7 4 x 9 3 2 x 5 8 7 4 7 x 2 )- 8 4 3x )= 47 8 2 7 x 4 5 6 2 5 8 x 4 7 2 8 0 7 x 8 4