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.

Ex Input:
Jason has 7 violet balloons and 4 red balloons. He lost 3 of the violetballoons. How many violet balloons does Jason have now?

Ex Output:
4.0


Ex Input:
Recently, the value of Kate's retirement fund decreased by $12. Ifher fund was worth $1472 before, how much is it worth now?

Ex Output:
1460.0


Ex Input:
Joan has 9 blue balloons, Sally has 5 blue balloons, and Jessica has 2blue balloons. How many blue balloons do they have in total?

Ex Output:

16.0