64 乘法 20 等于多少？

64 × 19 = 1216 64 × 21 = 1344 64 × 22 = 1408 64 × 18 = 1152 64 × 23 = 1472 64 × 17 = 1088 64 × 24 = 1536 64 × 16 = 1024 65 × 20 = 1300 63 × 20 = 1260 66 × 20 = 1320 62 × 20 = 1240 67 × 20 = 1340 61 × 20 = 1220 68 × 20 = 1360 60 × 20 = 1200 16 × 80 = 1280 20 × 64 = 1280 32 × 40 = 1280 40 × 32 = 1280 80 × 16 = 1280 43 × 71 = 3053 48 × 73 = 3504 96 × 19 = 1824 20 × 43 = 860 31 × 90 = 2790 6 × 80 = 480 18 × 66 = 1188 34 × 54 = 1836 66 × 66 = 4356