28 乘法 31 等于多少？

28 × 30 = 840 28 × 32 = 896 28 × 29 = 812 28 × 33 = 924 28 × 28 = 784 28 × 34 = 952 28 × 35 = 980 28 × 27 = 756 29 × 31 = 899 27 × 31 = 837 30 × 31 = 930 26 × 31 = 806 31 × 31 = 961 25 × 31 = 775 32 × 31 = 992 24 × 31 = 744 14 × 62 = 868 31 × 28 = 868 62 × 14 = 868 71 × 6 = 426 87 × 63 = 5481 89 × 38 = 3382 68 × 40 = 2720 41 × 76 = 3116 9 × 74 = 666 69 × 8 = 552 61 × 36 = 2196 77 × 97 = 7469 40 × 40 = 1600 31 × 44 = 1364