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

Example Input: Context: Paco had 22 sweet cookies and 75 salty cookies. He ate 15 sweet cookies and 54 salty cookies.

Question: How many sweet cookies did Paco have left?
Example Output: 7

Example Input: Context: A grocery store had 79 bottles of regular soda, 53 bottles of diet soda and 42 apples.

Question: How many more bottles of regular soda than diet soda did they have?
Example Output: 26

Example Input: Context: At the arcade Dave had won 19 tickets. If he used 12 to buy some toys and 7 more to buy some clothes

Question: How many more tickets did Dave use to buy toys than he did to buy clothes?
Example Output:
5