18 乘法 81 等于多少？

18 × 80 = 1440 18 × 82 = 1476 18 × 83 = 1494 18 × 79 = 1422 18 × 84 = 1512 18 × 78 = 1404 18 × 85 = 1530 18 × 77 = 1386 17 × 81 = 1377 19 × 81 = 1539 20 × 81 = 1620 16 × 81 = 1296 21 × 81 = 1701 15 × 81 = 1215 22 × 81 = 1782 14 × 81 = 1134 27 × 54 = 1458 54 × 27 = 1458 81 × 18 = 1458 45 × 87 = 3915 13 × 18 = 234 65 × 42 = 2730 20 × 86 = 1720 42 × 42 = 1764 3 × 17 = 51 3 × 28 = 84 36 × 87 = 3132 31 × 13 = 403 72 × 38 = 2736 92 × 56 = 5152