9 乘法 20 等于多少？

9 × 19 = 171 9 × 21 = 189 9 × 22 = 198 9 × 18 = 162 9 × 23 = 207 9 × 17 = 153 9 × 24 = 216 9 × 16 = 144 8 × 20 = 160 10 × 20 = 200 11 × 20 = 220 7 × 20 = 140 12 × 20 = 240 6 × 20 = 120 13 × 20 = 260 5 × 20 = 100 2 × 90 = 180 3 × 60 = 180 4 × 45 = 180 5 × 36 = 180 6 × 30 = 180 10 × 18 = 180 71 × 18 = 1278 80 × 2 = 160 51 × 88 = 4488 54 × 51 = 2754 44 × 73 = 3212 21 × 12 = 252 96 + 84 = 180 97 + 83 = 180