72 乘法 21 等于多少？

72 × 20 = 1440 72 × 22 = 1584 72 × 19 = 1368 72 × 23 = 1656 72 × 24 = 1728 72 × 18 = 1296 72 × 25 = 1800 72 × 17 = 1224 71 × 21 = 1491 73 × 21 = 1533 74 × 21 = 1554 70 × 21 = 1470 75 × 21 = 1575 69 × 21 = 1449 76 × 21 = 1596 68 × 21 = 1428 18 × 84 = 1512 21 × 72 = 1512 24 × 63 = 1512 27 × 56 = 1512 28 × 54 = 1512 36 × 42 = 1512 17 × 42 = 714 91 × 56 = 5096 13 × 50 = 650 43 × 18 = 774 68 × 79 = 5372 12 × 68 = 816 38 × 53 = 2014 82 × 48 = 3936