28 乘法 80 等于多少？

28 × 79 = 2212 28 × 81 = 2268 28 × 78 = 2184 28 × 82 = 2296 28 × 83 = 2324 28 × 77 = 2156 28 × 84 = 2352 28 × 76 = 2128 29 × 80 = 2320 27 × 80 = 2160 30 × 80 = 2400 26 × 80 = 2080 31 × 80 = 2480 25 × 80 = 2000 32 × 80 = 2560 24 × 80 = 1920 32 × 70 = 2240 35 × 64 = 2240 40 × 56 = 2240 56 × 40 = 2240 64 × 35 = 2240 70 × 32 = 2240 84 × 7 = 588 25 × 82 = 2050 4 × 72 = 288 84 × 91 = 7644 36 × 15 = 540 56 × 31 = 1736 52 × 34 = 1768 87 × 37 = 3219