20 乘法 90 等于多少？

20 × 89 = 1780 20 × 91 = 1820 20 × 92 = 1840 20 × 88 = 1760 20 × 93 = 1860 20 × 87 = 1740 20 × 94 = 1880 20 × 86 = 1720 19 × 90 = 1710 21 × 90 = 1890 22 × 90 = 1980 18 × 90 = 1620 23 × 90 = 2070 17 × 90 = 1530 24 × 90 = 2160 16 × 90 = 1440 18 × 100 = 1800 24 × 75 = 1800 25 × 72 = 1800 30 × 60 = 1800 36 × 50 = 1800 40 × 45 = 1800 6 × 68 = 408 71 × 62 = 4402 70 × 91 = 6370 36 × 98 = 3528 35 × 17 = 595 90 × 98 = 8820 99 × 92 = 9108 23 × 60 = 1380