9 81 x 3 July 8, 2019 16 32 64 128 81 9 1 3 x 3 33 9 x 3 81 12 7 9 3 x 3 81 x )+ 2 81 9 x 3 25 9 81 9 x 32 5 9 x 81 32 9 * 81 x 1 27 x 3 9 3x 81 x 4 9 3x 3 81 x 2 25 81 9 7 x 3 9 2x 1 81 x 2 3x 243 81 x 9 3 3 x 9 81 5x 1 9 x 10 )+ 3 81 81 2x 3 9 x 3