After reading this thread I have determined that math is necessary/unnecessary when doing scrollsaw work? So, I'll just start counting when I begin a project and when I get to forty eleven, I'll quit counting and simply enjoy the rest of the day. Just kidding of course. I know folks who keep journals for the purposes of knowing how many holes they cut, and how much time they spent on a project, and all of that is fine if that is what winds your clock. People do ask and it's nice not to have to guess or speculate I suppose. I do hear of folks who have hour meters on their saws, and that is a good idea so as to know when to do maintenance and such. I usually wait until things act up or break and then fix them. I got over 20 years out of a DW788 Type 1 using this method, so I guess it works. Twice a year disassembly, cleaning and oiling seemed to work out well.
My wife and I have a little different take on it. When we have both our saws running, the challenge is who gets the biggest pile of dust at our feet at the end of a given day. (Seriously though, we have some good dust collection systems, so we do collect about 90% of the fine dust.) NO!, I didn't do the math there. I just used the guesstimate method.
Like I said, whatever winds your clock. And as long as you enjoy the time you spend, counting or sawing, it's all good.