LOL. Whatever fraction 19 or 20 of 39 is then. I almost didn't pass High School cuz of math (after getting kicked out of a class, days after my great grandpa passed, I left school & headed to the local army recruitment office...I walked in & everything, but wasn't man enough to ever sign up - mostly cuz I wanted to race. Forever respect & appreciation for those that have served, continue to, or will! & I'm sure they were all smarter than I too!), so somebody else will have to do those calculations; my guesstimate is possibly somewhere between "28-36/64s"?...lol