21 乘法 99 等于多少？

21 × 98 = 2058 21 × 100 = 2100 21 × 97 = 2037 21 × 96 = 2016 21 × 95 = 1995 21 × 94 = 1974 21 × 93 = 1953 21 × 92 = 1932 20 × 99 = 1980 22 × 99 = 2178 19 × 99 = 1881 23 × 99 = 2277 24 × 99 = 2376 18 × 99 = 1782 25 × 99 = 2475 17 × 99 = 1683 27 × 77 = 2079 33 × 63 = 2079 63 × 33 = 2079 77 × 27 = 2079 99 × 21 = 2079 34 × 76 = 2584 9 × 42 = 378 18 × 91 = 1638 64 × 8 = 512 73 × 79 = 5767 67 × 64 = 4288 17 × 89 = 1513 9 × 44 = 396 12 × 14 = 168