9 乘法 9 等于多少？

9 × 8 = 72 9 × 10 = 90 9 × 11 = 99 9 × 7 = 63 9 × 12 = 108 9 × 6 = 54 9 × 13 = 117 9 × 5 = 45 8 × 9 = 72 10 × 9 = 90 11 × 9 = 99 7 × 9 = 63 12 × 9 = 108 6 × 9 = 54 13 × 9 = 117 5 × 9 = 45 1 × 81 = 81 3 × 27 = 81 27 × 3 = 81 81 × 1 = 81 50 × 24 = 1200 86 × 23 = 1978 13 × 66 = 858 50 × 90 = 4500 83 × 30 = 2490 32 + 49 = 81 2 + 79 = 81 47 + 34 = 81 87 - 6 = 81 78 × 67 = 5226