91 乘法 18 等于多少？

91 × 17 = 1547 91 × 19 = 1729 91 × 20 = 1820 91 × 16 = 1456 91 × 21 = 1911 91 × 15 = 1365 91 × 22 = 2002 91 × 14 = 1274 92 × 18 = 1656 90 × 18 = 1620 93 × 18 = 1674 89 × 18 = 1602 94 × 18 = 1692 88 × 18 = 1584 95 × 18 = 1710 87 × 18 = 1566 18 × 91 = 1638 21 × 78 = 1638 26 × 63 = 1638 39 × 42 = 1638 42 × 39 = 1638 63 × 26 = 1638 89 × 30 = 2670 64 × 93 = 5952 15 × 81 = 1215 89 × 61 = 5429 98 × 14 = 1372 21 × 48 = 1008 91 × 88 = 8008 80 × 11 = 880