81 乘法 4 等于多少？

81 × 3 = 243 81 × 5 = 405 81 × 2 = 162 81 × 6 = 486 81 × 1 = 81 81 × 7 = 567 81 × 8 = 648 81 × 9 = 729 80 × 4 = 320 82 × 4 = 328 83 × 4 = 332 79 × 4 = 316 84 × 4 = 336 78 × 4 = 312 85 × 4 = 340 77 × 4 = 308 4 × 81 = 324 6 × 54 = 324 9 × 36 = 324 12 × 27 = 324 18 × 18 = 324 27 × 12 = 324 62 × 77 = 4774 40 × 82 = 3280 30 × 60 = 1800 85 × 54 = 4590 16 × 67 = 1072 20 × 19 = 380 55 × 73 = 4015 22 × 27 = 594