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: Jason has 676 Pokemon cards. Alyssa bought 224 of Jason'sPokemon cards. How many Pokemon cards does Jason have now?
Example Output: 452.0

Example Input: Keith spent $136.06 on speakers, $139.38 on a CD player, and $112.46 on new tires. He wanted 3 CD's for $6.16, but did n't buythem. In total, how much did he spend?
Example Output: 387.9

Example Input: Mary had 7 nickels in her bank. Her dad gave her 5 nickels. Howmany nickels does Mary have now?
Example Output:
12.0