How do I turn 1234 into 1.2k, or 123123123 into 1.2M?

Im making a game and can't figure it out ive tried the floor expression but all it does is set my var to 0. Please help!!

Divide n by 10^(l-s), where n is your original number, l is the length of your original number, and s is the number of significant figures you want your result to be.

Round or floor the result, then divide again by 10^(d) where d is the number of digits you want after the decimal.

You can use an expression to get l, which would be len(n), as long as n is a whole number.