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:
There are 7 dogwood trees currently in the park. Park workers willplant 3 dogwood trees today and 2 dogwood trees tomorrow. Howmany dogwood trees will the park have when the workers arefinished?

Ex Output:
12.0


Ex Input:
Alyssa picked 42 pears and Nancy picked 17 pears from the pear tree.How many pears were picked in all?

Ex Output:
59.0


Ex Input:
Mike has 87 baseball cards. Sam bought 13 of Mike's baseball cards.How many baseball cards does Mike have now?

Ex Output:

74.0