71 乘法 20 等于多少？

71 × 19 = 1349 71 × 21 = 1491 71 × 22 = 1562 71 × 18 = 1278 71 × 23 = 1633 71 × 17 = 1207 71 × 24 = 1704 71 × 16 = 1136 70 × 20 = 1400 72 × 20 = 1440 69 × 20 = 1380 73 × 20 = 1460 74 × 20 = 1480 68 × 20 = 1360 75 × 20 = 1500 67 × 20 = 1340 20 × 71 = 1420 39 × 20 = 780 77 × 14 = 1078 37 × 31 = 1147 64 × 34 = 2176 21 × 74 = 1554 82 × 32 = 2624 21 × 24 = 504 46 × 19 = 874 18 × 73 = 1314 39 × 78 = 3042 30 × 58 = 1740 23 × 16 = 368