1 乘法 80 等于多少？

1 × 79 = 79 1 × 81 = 81 1 × 78 = 78 1 × 82 = 82 1 × 83 = 83 1 × 77 = 77 1 × 84 = 84 1 × 76 = 76 2 × 80 = 160 3 × 80 = 240 4 × 80 = 320 5 × 80 = 400 6 × 80 = 480 7 × 80 = 560 8 × 80 = 640 9 × 80 = 720 2 × 40 = 80 4 × 20 = 80 5 × 16 = 80 8 × 10 = 80 10 × 8 = 80 16 × 5 = 80 89 × 12 = 1068 91 × 40 = 3640 30 × 50 = 1500 86 × 99 = 8514 24 × 30 = 720 72 × 46 = 3312 27 + 53 = 80 97 - 17 = 80