1 x 18 = 18 2 x 18 = 36 3 x 18 = 54 4 x 18 = 72 5 x 18 = 90 6 x 18 = 108 7 x 18 = 126 8 x 18 = 144 9 x 18 = 162 10 x 18 = 180 11 x 18 = 198 12 x 18 = 216 13 x 18 = 234 14 x 18 = 252 15 x 18 = 270 16 x 18 = 288 17 x 18 = 306 18 x 18 = 324 19 x 18 = 342 20 x 18 = 360