31 乘法 21 等于多少？

31 × 20 = 620 31 × 22 = 682 31 × 19 = 589 31 × 23 = 713 31 × 24 = 744 31 × 18 = 558 31 × 25 = 775 31 × 17 = 527 30 × 21 = 630 32 × 21 = 672 29 × 21 = 609 33 × 21 = 693 28 × 21 = 588 34 × 21 = 714 35 × 21 = 735 27 × 21 = 567 7 × 93 = 651 21 × 31 = 651 93 × 7 = 651 57 × 54 = 3078 33 × 87 = 2871 17 × 88 = 1496 79 × 12 = 948 48 × 81 = 3888 39 × 32 = 1248 48 × 59 = 2832 50 × 97 = 4850 96 × 57 = 5472 11 × 34 = 374 61 × 60 = 3660