Definition: 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: There are 27 pencils in the drawer. Nancy placed 45 pencils in thedrawer. How many pencils are now there in total?
Output:
72.0