Repeating Decimals

Every repeating decimal is the sum of an infinite geometric series. In order to find the quotient of integers (the fraction) of a repeating decimal, first, the decimal has to be written as a quotient of integers and the geometric series has to be seen. From the broken up decimals, the sum should be really easy to find. After finding the sum, the corresponding parts of the equation S=a/1-r. The final answer should always be checked by a calculator just in case.