28 乘法 30 等于多少？

28 × 29 = 812 28 × 31 = 868 28 × 28 = 784 28 × 32 = 896 28 × 33 = 924 28 × 27 = 756 28 × 34 = 952 28 × 26 = 728 29 × 30 = 870 27 × 30 = 810 30 × 30 = 900 26 × 30 = 780 31 × 30 = 930 25 × 30 = 750 32 × 30 = 960 24 × 30 = 720 10 × 84 = 840 12 × 70 = 840 14 × 60 = 840 15 × 56 = 840 20 × 42 = 840 21 × 40 = 840 60 × 50 = 3000 12 × 27 = 324 12 × 5 = 60 46 × 50 = 2300 70 × 78 = 5460 57 × 67 = 3819 21 × 27 = 567 100 × 20 = 2000