Hi there Saladin,
I don't see a way to avoid the division. That is a mathematical necessity as far as I understand. If it where base two and not base 10 the right shift operateion replaces the division, but as the task is in base 10 I dont think there is any way of avoiding that.

This is my solution
https://www.codewars.com/kata/reviews/5e42dbd090bbd20001e5810f/groups/5e922e91955e440001a508b1

I thought of this solution but it feels a bit resource intensive to transform the whole thing into a string and let the string function do the conversion implicitly and then explicitly reconvert the string to an integer. Yes it is nice to write, but it depends on a lot of the std library and cant be run on embedded systems (muC). It does use many language paradigms, so that's kinda cool