Here I am - changing another one, @Crazy Cat Lad. After reviewing all my answers, & being reminded of certain "rules" of mathematics, I will say this answer is: 22. I've forgotten so much about equations & the order of how certain things are done. I'm over 60 yrs old. Haven't done much more than basic math in years! I really hope that the games in the future will take into account that some of us players are getting on in years & aren't as sharp as we once we're. And, also, remember that, even though these problems aren't terribly complicated, it's been over half of a decade since some of us have done any complex (even slightly complex), mathematics. Anyhow, new answer is: 22. (I hope)