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

### Instruction:
On a normal day, Julia can run a mile in 10 minutes. However, today she decided to wear her new shoes to run. They were uncomfortable and slowed her mile down to 13 minutes. How much longer would it take Julia to run 5 miles in her new shoes than if she wore her old ones?

### Response:
With her regular shoes, it should take 5*10=<<5*10=50>>50 minutes to run five miles
If she wore her new shoes it would take 13*5=65 minutes to run five miles
It would take 65-50=<<65-50=15>>15 more minutes if she wore her new shoes
#### 15