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.

Example Input: A construction company ordered 0.16 ton ofconcrete, 0.14 ton of bricks, and 0.5 ton of stone. How many tons of material did the company order in all?
Example Output: 0.8

Example Input: There are 9 pencils and 4 rulers in the drawer. Sally took 4 pencils outof the drawer. How many pencils are there now?
Example Output: 5.0

Example Input: Mike went to 15 basketball games this year, but missed 41. He wentto 39 games last year. How many basketball games did Mike go to intotal?
Example Output:
54.0