99 乘法 21 等于多少？

99 × 20 = 1980 99 × 22 = 2178 99 × 19 = 1881 99 × 23 = 2277 99 × 24 = 2376 99 × 18 = 1782 99 × 25 = 2475 99 × 17 = 1683 98 × 21 = 2058 100 × 21 = 2100 97 × 21 = 2037 96 × 21 = 2016 95 × 21 = 1995 94 × 21 = 1974 93 × 21 = 1953 92 × 21 = 1932 21 × 99 = 2079 27 × 77 = 2079 33 × 63 = 2079 63 × 33 = 2079 77 × 27 = 2079 16 × 15 = 240 30 × 66 = 1980 75 × 66 = 4950 80 × 90 = 7200 89 × 85 = 7565 43 × 65 = 2795 7 × 50 = 350 78 × 98 = 7644 8 × 46 = 368