A fraction is usually split into two parts: the first part is the number on top, called the numerator; and the second part is the number on the bottom, called the denominator. These are both separated by a line called the “divisor line”. We can use the division method help to solve this question: to get a decimal, simply divide the numerator 5258 by the denominator 52 (which you can enter in any calculator):
5258 (numerator) ÷ 52 (denominator) = 101.12
And finally, you get 101.12 as your answer when you convert 100 58/52 (or 5258/52) to a decimal.