49 乘法 80 等于多少？

49 × 79 = 3871 49 × 81 = 3969 49 × 78 = 3822 49 × 82 = 4018 49 × 83 = 4067 49 × 77 = 3773 49 × 84 = 4116 49 × 76 = 3724 48 × 80 = 3840 50 × 80 = 4000 47 × 80 = 3760 51 × 80 = 4080 46 × 80 = 3680 52 × 80 = 4160 53 × 80 = 4240 45 × 80 = 3600 40 × 98 = 3920 56 × 70 = 3920 70 × 56 = 3920 80 × 49 = 3920 98 × 40 = 3920 54 × 5 = 270 6 × 7 = 42 87 × 50 = 4350 53 × 14 = 742 10 × 8 = 80 87 × 96 = 8352 36 × 90 = 3240 52 × 29 = 1508 34 × 60 = 2040