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:
Fred has 40 baseball cards. Keith bought 22 of Fred's baseball cards.How many baseball cards does Fred have now?

Ex Output:
18.0


Ex Input:
Alec and his roommates ate 3.25 pints of ice cream on Friday nightand 0.25 pint of ice cream on Saturday night. How many pints didthey eat in all?

Ex Output:
3.5


Ex Input:
There are 5 scissors and 3 pencils in the drawer. Jason placed 4scissors in the drawer. How many scissors are now there in total?

Ex Output:

9.0