9 乘法 80 等于多少？

9 × 79 = 711 9 × 81 = 729 9 × 78 = 702 9 × 82 = 738 9 × 83 = 747 9 × 77 = 693 9 × 84 = 756 9 × 76 = 684 8 × 80 = 640 10 × 80 = 800 11 × 80 = 880 7 × 80 = 560 12 × 80 = 960 6 × 80 = 480 13 × 80 = 1040 5 × 80 = 400 8 × 90 = 720 10 × 72 = 720 12 × 60 = 720 15 × 48 = 720 16 × 45 = 720 18 × 40 = 720 23 × 42 = 966 52 × 88 = 4576 77 × 84 = 6468 5 × 25 = 125 48 × 1 = 48 38 × 98 = 3724 72 × 47 = 3384 60 × 13 = 780