2 乘法 90 等于多少？

2 × 89 = 178 2 × 91 = 182 2 × 92 = 184 2 × 88 = 176 2 × 93 = 186 2 × 87 = 174 2 × 94 = 188 2 × 86 = 172 1 × 90 = 90 3 × 90 = 270 4 × 90 = 360 5 × 90 = 450 6 × 90 = 540 7 × 90 = 630 8 × 90 = 720 9 × 90 = 810 3 × 60 = 180 4 × 45 = 180 5 × 36 = 180 6 × 30 = 180 9 × 20 = 180 10 × 18 = 180 100 × 30 = 3000 86 × 89 = 7654 86 × 28 = 2408 88 × 26 = 2288 30 × 52 = 1560 61 × 7 = 427 92 + 88 = 180 87 + 93 = 180