A mix of me doing half of this a month ago and not double checking it when I posted it and me only using the formula for higher levels where people would actually care to the point that I didn't notice it doesn't work for low levels. I'll swap it out though. Also the helpers only helped me find the earning multipliers as those take a while to find for everything.
seems like an overcomplicated and impractical (for quick calculations) form of the formula tbh,
Let f(n) be the level
f(n) = 20+30+...+10(n+1)
=10(2+3+4+...+n+1)
=10 (1+2+3+...+n+1) -10
= 10(n+1)(n+2)/2 - 10
=5(n+1)(n+2) - 10
A mix of me doing half of this a month ago and not double checking it when I posted it and me only using the formula for higher levels where people would actually care to the point that I didn't notice it doesn't work for low levels. I'll swap it out though. Also the helpers only helped me find the earning multipliers as those take a while to find for everything.