42 乘法 40 等于多少？

42 × 39 = 1638 42 × 41 = 1722 42 × 38 = 1596 42 × 42 = 1764 42 × 37 = 1554 42 × 43 = 1806 42 × 44 = 1848 42 × 36 = 1512 41 × 40 = 1640 43 × 40 = 1720 40 × 40 = 1600 44 × 40 = 1760 39 × 40 = 1560 45 × 40 = 1800 38 × 40 = 1520 46 × 40 = 1840 20 × 84 = 1680 21 × 80 = 1680 24 × 70 = 1680 28 × 60 = 1680 30 × 56 = 1680 35 × 48 = 1680 39 × 14 = 546 6 × 14 = 84 34 × 67 = 2278 54 × 99 = 5346 73 × 10 = 730 48 × 67 = 3216 48 × 86 = 4128 40 × 97 = 3880