Solution: 3 123/7 as a decimal is 20.57MethodsFirst step – Making the fraction improper:The first step to changing 3 123/7 into a decimal is to change it to an improper fraction. To do that, we need to multiply 3 by 7 and add its product to 123 in the numerator to get: 144/7. Now we will attempt to convert 144/7 to a decimal using the following method:Explanation using the division method:One method to convert 144/7 to a decimal is by using the division method. Before we move ahead to the method, here is a quick recap on fractions: A fraction is a number representation that is broken down into two parts - the number on top is called the numerator, and the number on the bottom is called the denominator. To get a decimal using the division method, simply divide the numerator 144 by the denominator 7:144 (numerator) ÷ 7 (denominator) = 20.57And there you go! We got 20.57 as the answer when you convert 3 123/7 (or 144/7) to a decimal.Practice more problems!All it takes to be better at something is some practice! Take a look at some more similar problems on converting fractions to decimals and give them a go:What is 1 81/44 as a decimal?What is 15 1/10 as a decimal?What is 7 7/19 as a decimal?What is 2 52/24 as a decimal?