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:
Jessica is baking a cake. The recipe calls for 8 cups of flour and 2 cupsof sugar. She already put in 4 cups of flour. How many cups of flourdoes she need to add?

Ex Output:
4.0


Ex Input:
Sally picked 7 lemons and Mary picked 9 lemons from the lemon tree. How many lemons were picked in total?

Ex Output:
16.0


Ex Input:
Joan has 8 orange balloons but lost 2 of them. How many orangeballoons does Joan have now?

Ex Output:

6.0


