4 х 15 July 8, 2019 16 32 64 128 4 х 150 4 x 150 4 x 1500 4 x 15 =- 5 4 x 15000 4 x 155 4 x 156 4 x 15.3 4 x 152 4 x 154 4 x 159 4 x 158 4 x 151 15 + x 4 = 88 4 x 157