Capitalism 2 and Capitalism Lab Forum

I appointed a COO to run my banks which was a big mistake. I tried to adjust the interest rates back to 20% on the loans but i was getting od numbers like 20.75 20, 19.75 i couldn't get it back exactly 20%
How do i get it back to 20% even. See picture

You may try this method: increasing one of the credit ratings to the maximum value of 100%, then reallocating it to other credit ratings.

I was unable to get it back to 20% i gave up after a while playing with the percentages.