42 乘法 21 等于多少？

42 × 20 = 840 42 × 22 = 924 42 × 19 = 798 42 × 23 = 966 42 × 24 = 1008 42 × 18 = 756 42 × 25 = 1050 42 × 17 = 714 41 × 21 = 861 43 × 21 = 903 40 × 21 = 840 44 × 21 = 924 39 × 21 = 819 45 × 21 = 945 38 × 21 = 798 46 × 21 = 966 9 × 98 = 882 14 × 63 = 882 18 × 49 = 882 21 × 42 = 882 49 × 18 = 882 63 × 14 = 882 82 × 39 = 3198 39 × 86 = 3354 42 × 84 = 3528 49 × 79 = 3871 88 × 72 = 6336 46 × 86 = 3956 26 × 83 = 2158 31 × 1 = 31