Calculate the number of hours in 3 days.
The number of hours in 3 days is `24 x 3` = `72` hours.
Below is an instruction that describes a task, write a response that appropriately completes the request.

### Instruction:
Calculate the number of hours in 3 days.

### Response:
The number of hours in 3 days is `24 x 3` = `72` hours.