How many of the numbers from 10 through 98 have the sum of their digits equal to a perfect square?

There are 14 numbers

Call me crazy, but aren't you supposed to divide the denominator and numerator by the same number..? In this case, that number being 3? Oh no, wait I need to help with the problem first I think...
Ok so first off, look at the two denominators. 13 and 1. In order to get from 13 to 1, you need to divide by 13 (13 ÷ 13 = 1). Secondly, you need to do to the numerator what you did the denominator, divide by 13 Which is what you need help with... Right, sorry.
Anyway, you can use a calculator to do the math for you (45.5 ÷ 13 = 3.5), or you can do it yourself. You just need to divide it how you would a regular number. You'll just need to put the decimal in the answer where it is in the other number.
} I hope this helped! {
> Sorry It's So Long :(