21 乘法 70 等于多少？

21 × 69 = 1449 21 × 71 = 1491 21 × 68 = 1428 21 × 72 = 1512 21 × 67 = 1407 21 × 73 = 1533 21 × 74 = 1554 21 × 66 = 1386 20 × 70 = 1400 22 × 70 = 1540 19 × 70 = 1330 23 × 70 = 1610 24 × 70 = 1680 18 × 70 = 1260 25 × 70 = 1750 17 × 70 = 1190 15 × 98 = 1470 30 × 49 = 1470 35 × 42 = 1470 42 × 35 = 1470 49 × 30 = 1470 70 × 21 = 1470 24 × 82 = 1968 66 × 86 = 5676 90 × 55 = 4950 46 × 7 = 322 13 × 22 = 286 57 × 84 = 4788 33 × 54 = 1782 9 × 56 = 504