About the maximum level.

This reminded me of a funny short film about money and an iron. ))

I have another question: what's the point of having levels above 40?

Added 4 minutes later

Maybe it's possible to change the integer? Or is that impossible (I'm not very good at this, so I'm just thinking like a regular user)?
I was looking for such a mod, but I couldn't find it :(

You need to change not the range, but the amount of experience and the coefficient for it, for example, level 1 - 100 experience, level 2 - 200, while reducing the experience gain coefficient by 10 (k=0.1). There must be a level-to-experience table somewhere, so you can change it, right?