13 乘法 81 等于多少？

13 × 80 = 1040 13 × 82 = 1066 13 × 83 = 1079 13 × 79 = 1027 13 × 84 = 1092 13 × 78 = 1014 13 × 85 = 1105 13 × 77 = 1001 12 × 81 = 972 14 × 81 = 1134 11 × 81 = 891 15 × 81 = 1215 10 × 81 = 810 16 × 81 = 1296 17 × 81 = 1377 9 × 81 = 729 27 × 39 = 1053 39 × 27 = 1053 81 × 13 = 1053 81 × 90 = 7290 84 × 70 = 5880 18 × 33 = 594 18 × 57 = 1026 35 × 16 = 560 15 × 10 = 150 27 × 45 = 1215 47 × 78 = 3666 57 × 12 = 684 28 × 31 = 868 54 × 72 = 3888