脱式计算.(能简算的要简算)
| [
| 42×(
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|
| 5×4×(
|
| 1 |
| 6 |
| 7 |
| 16 |
| 12 |
| 35 |
| 3 |
| 20 |
| 7 |
| 16 |
| 12 |
| 35 |
| 20 |
| 3 |
| 7×12×20 |
| 16×35×3 |
| 7 |
| 8 |
| 5 |
| 16 |
| 1 |
| 4 |
| 26 |
| 27 |
| 7 |
| 8 |
| 1 |
| 16 |
| 26 |
| 27 |
| 13 |
| 16 |
| 26 |
| 27 |
| 27 |
| 32 |
| 5 |
| 6 |
| 3 |
| 7 |
| 5 |
| 6 |
| 3 |
| 7 |
| 14 |
| 5 |
| 3 |
| 2 |
| 14 |
| 5 |
| 7 |
| 2 |
| 14 |
| 5 |
| 3 |
| 2 |
| 7 |
| 2 |
| 14 |
| 5 |
| 7 |
| 4 |
| 5 |
| 6 |
| 7 |
| 4 |
| 7 |
| 4 |
| 5 |
| 6 |
| 7 |
| 4 |
| 1 |
| 6 |
| 7 |
| 4 |
| 5 |
| 6 |
| 1 |
| 6 |
| 7 |
| 4 |
| 7 |
| 4 |
| 1 |
| 5 |
| 3 |
| 4 |
| 1 |
| 5 |
| 3 |
| 4 |
| 1 |
| 5 |
| 3 |
| 4 |
| 1 |
| 5 |
| 3 |
| 4 |
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