1 乘法 21 等于多少？

1 × 20 = 20 1 × 22 = 22 1 × 19 = 19 1 × 23 = 23 1 × 24 = 24 1 × 18 = 18 1 × 25 = 25 1 × 17 = 17 2 × 21 = 42 3 × 21 = 63 4 × 21 = 84 5 × 21 = 105 6 × 21 = 126 7 × 21 = 147 8 × 21 = 168 9 × 21 = 189 3 × 7 = 21 7 × 3 = 21 21 × 1 = 21 42 × 7 = 294 96 × 85 = 8160 60 × 94 = 5640 83 × 88 = 7304 33 × 56 = 1848 67 × 76 = 5092 79 - 58 = 21 69 - 48 = 21 11 + 10 = 21 15 + 6 = 21 69 × 88 = 6072