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 34 pencils and 49 crayons in the drawer. Dan took 22pencils from the drawer. How many pencils are now in the drawer?

12.0