Definition: You are provided with an arithmetic question. Your task is to compute the solution using the given arithmetic operations. The only arithmetic operators needed to answer the questions are'+'(addition) and'-'(subtraction). The answer should be correct to one decimal place.
Input: Last week Fred had 23 dollars and Jason had 46 dollars. Fred washedcars over the weekend and now has 86 dollars. How much money didFred make washing cars?

63.0