78 乘法 20 等于多少？

78 × 19 = 1482 78 × 21 = 1638 78 × 22 = 1716 78 × 18 = 1404 78 × 23 = 1794 78 × 17 = 1326 78 × 24 = 1872 78 × 16 = 1248 77 × 20 = 1540 79 × 20 = 1580 76 × 20 = 1520 80 × 20 = 1600 75 × 20 = 1500 81 × 20 = 1620 74 × 20 = 1480 82 × 20 = 1640 20 × 78 = 1560 24 × 65 = 1560 26 × 60 = 1560 30 × 52 = 1560 39 × 40 = 1560 40 × 39 = 1560 2 × 59 = 118 17 × 43 = 731 66 × 38 = 2508 49 × 61 = 2989 24 × 95 = 2280 85 × 98 = 8330 19 × 79 = 1501 7 × 52 = 364