Headache by Tyler

Tyler says you can multiple, divide, add or subtract any of the following numbers...... but you need to use all 5 and your answer should come to 14.
Send him a message in how you did it.

18, 22, 6, 9, 12

I gave up. I keep getting 13 or 15.

Ty's email: SpyTyCenname@aol.com