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: Marco and his dad went strawberry picking. Together their strawberries weighed 35 pounds. Marco's strawberries weighed 13 pounds. 

 Question: How much more did his dad's strawberries weigh than his?

Output: 9


Input: Consider Input: Context: Paco had 28 cookies. He ate some of them and had 7 cookies left. 

 Question: How many cookies did Paco eat?

Output: 21


Input: Consider Input: Context: Julia played tag with a total of 18 kids. She played with 4 kids on monday and yet with some more kids on tuesday. 

 Question: How many kids did she play with on tuesday?


Output: 14