用递等式计算.(可用简便算法)
×
+
×
+(
+
)×
÷7+
×
÷7+
×
(
+
-
)÷
1
÷0.24-1.6×
.
| 57 |
| 10 |
| 3 |
| 10 |
| 3 |
| 10 |
| 3 |
| 10 |
| 2 |
| 3 |
| 4 |
| 7 |
| 1 |
| 2 |
| 7 |
| 25 |
| 8 |
| 13 |
| 1 |
| 7 |
| 6 |
| 13 |
| 8 |
| 13 |
| 1 |
| 7 |
| 7 |
| 13 |
(
| 1 |
| 12 |
| 1 |
| 2 |
| 7 |
| 12 |
| 1 |
| 7 |
1
| 1 |
| 5 |
| 3 |
| 4 |