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: The Silvergrove Public Library used a grant to purchase 2647 books.Now the library has a total of 8582 books. How many books did thelibrary have before the grant?

Output: 5935.0


Input: Consider Input: Irene just bought a new lamp for her bedside table. The old lamp was 1 foot tall and the new lamp is 2.3 feet tall. How much taller is the new lamp than the old lamp?

Output: 1.3


Input: Consider Input: Sara had 21 quarters in her bank. Her dad gave her 49 quarters. Howmany quarters does she have now?


Output: 70.0