Below is an instruction that describes a task. Write a response that appropriately completes the request in English. Please answer in English.

### Instruction:
During 5 hours, a spider can catch 9 flies. How many flies would this spider catch in 30 hours if he would keep his efficiency?

### Response:
In 30 hours a spider would be able to catch 9 * 30 / 5 = <<9*30/5=54>>54 flies.
#### 54