90 乘法 21 等于多少？

90 × 20 = 1800 90 × 22 = 1980 90 × 19 = 1710 90 × 23 = 2070 90 × 24 = 2160 90 × 18 = 1620 90 × 25 = 2250 90 × 17 = 1530 89 × 21 = 1869 91 × 21 = 1911 92 × 21 = 1932 88 × 21 = 1848 93 × 21 = 1953 87 × 21 = 1827 94 × 21 = 1974 86 × 21 = 1806 21 × 90 = 1890 27 × 70 = 1890 30 × 63 = 1890 35 × 54 = 1890 42 × 45 = 1890 45 × 42 = 1890 5 × 48 = 240 93 × 41 = 3813 5 × 7 = 35 24 × 78 = 1872 58 × 57 = 3306 28 × 15 = 420 83 × 68 = 5644 69 × 90 = 6210