Calculate the average of 12, 15, 22, and 17.
The average of the numbers 12, 15, 22, and 17 is (12+15+22+17)/4 = 16.5.
Below is an instruction that describes a task, write a response that appropriately completes the request.

### Instruction:
Calculate the average of 12, 15, 22, and 17.

### Response:
The average of the numbers 12, 15, 22, and 17 is (12+15+22+17)/4 = 16.5.