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 16800 by the denominator 124 (which you can enter in any calculator):
16800 (numerator) ÷ 124 (denominator) = 135.48
And finally, you get 135.48 as your answer when you convert 135 60/124 (or 16800/124) to a decimal.