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 11442 by the denominator 78 (which you can enter in any calculator):
11442 (numerator) ÷ 78 (denominator) = 146.69
And finally, you get 146.69 as your answer when you convert 146 54/78 (or 11442/78) to a decimal.