9 乘法 21 等于多少？

9 × 20 = 180 9 × 22 = 198 9 × 19 = 171 9 × 23 = 207 9 × 24 = 216 9 × 18 = 162 9 × 25 = 225 9 × 17 = 153 8 × 21 = 168 10 × 21 = 210 11 × 21 = 231 7 × 21 = 147 12 × 21 = 252 6 × 21 = 126 13 × 21 = 273 5 × 21 = 105 3 × 63 = 189 7 × 27 = 189 21 × 9 = 189 27 × 7 = 189 63 × 3 = 189 3 × 87 = 261 11 × 43 = 473 43 × 93 = 3999 47 × 57 = 2679 97 × 46 = 4462 31 × 57 = 1767 95 + 94 = 189 91 + 98 = 189 98 + 91 = 189