13 乘法 21 等于多少？

13 × 20 = 260 13 × 22 = 286 13 × 19 = 247 13 × 23 = 299 13 × 24 = 312 13 × 18 = 234 13 × 25 = 325 13 × 17 = 221 12 × 21 = 252 14 × 21 = 294 11 × 21 = 231 15 × 21 = 315 10 × 21 = 210 16 × 21 = 336 17 × 21 = 357 9 × 21 = 189 3 × 91 = 273 7 × 39 = 273 21 × 13 = 273 39 × 7 = 273 91 × 3 = 273 33 × 6 = 198 86 × 24 = 2064 39 × 41 = 1599 48 × 21 = 1008 70 × 17 = 1190 67 × 55 = 3685 78 × 27 = 2106 100 × 5 = 500 17 × 51 = 867