You are given a math word problem and you are supposed to apply addition or subtraction mathematical operators on the numbers embedded in the text to answer the following question and then only report the final numerical answer.

Example Input: There is 0.16666666666666666 cup of oil in Scarlett 's measuring cup . If Scarlett adds 0.6666666666666666 cup more , how much oil will be in the measuring cup ?
Example Output: 0.8333333333333334

Example Input: Adam bought 2 boxes of chocolate candy and 5 boxes of caramel candy . If each box has 4 pieces inside it , how much candy did he have total ?
Example Output: 28

Example Input: Isabel bought 900 pieces of paper . She used 156 pieces of the paper . How many pieces of paper does she have left ?
Example Output:
744