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: There were 46 bales of hay in the barn and 32 bales in the shed. Tomstacked bales in the barn today. There are now 60 bales of hay in thebarn. How many bales did he store in the barn?
Example Output: 14.0

Example Input: A restaurant made 9 hamburgers and 4 hot dogs to serve during lunch. Only 3 hamburgers were actually served. How many hamburgerswere over?
Example Output: 6.0

Example Input: Kenji and his classmates placed colored blocks on a scale during ascience lab. The yellow block weighed 0.6 pounds and the greenblock weighed 0.4 pounds. How much more did the yellow blockweigh than the green block?
Example Output:
0.2