I think that increasing the limit of fractions by 5 and by 5000 represents the same difficulty.

This is long and tedious, you also have to catch a bunch of mistakes. It is better to do things first, which in the shortest possible time will bring the greatest effect.

It would be nice to start with simple goals (or better yet, discuss how best to implement the functionality described in the third message of this topic. There I update the to-do list for the next updates and I need to know how others want to see it.)