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: Consider Input: Melanie has 41 books and 31 magazines in her library. She boughtseveral books at a yard sale over the weekend. She now has 87 booksin her library. How many books did she buy at the yard sale?

Output: 46.0


Input: Consider Input: Benny received 67 dollars for his birthday. He went to a sportinggoods store and bought a baseball glove, baseball, and bat. He had33 dollars over, how much did he spent on the baseball gear?

Output: 34.0


Input: Consider Input: Sally found 9 seashells, Tom found 7 seashells, and Jessica found 5seashells on the beach. How many seashells did they find together?


Output: 21.0