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.

Input: Consider Input: Context: Haley grew 13 trees in her backyard. After a typhoon 6 died. 

 Question: How many more trees survived the typhoon than those that died?

Output: 1


Input: Consider Input: Context: At the arcade Dave had won 7 tickets. He used some tickets to buy toys. If he still has 2 tickets left 

 Question: How many tickets did Dave use to buy toys?

Output: 5


Input: Consider Input: Context: Tiffany was collecting cans for recycling. On monday she had 4 bags of cans. The next day she found some more bags worth of cans. If she had a total of 6 bags altogether 

 Question: How many bags did she find on the next day?


Output: 2


