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: David did 51 push-ups in gym class today. David did 49 more push-ups than Zachary. 

 Question: How many push-ups did Zachary and David do altogether?

Output: 53


Input: Consider Input: Context: Danny collects bottle caps and wrappers. He found 58 bottle caps and 25 wrappers at the park. Now he has 11 wrappers and 12 bottle caps in his collection. 

 Question: How many more bottle caps than wrappers does danny have now?

Output: 1


Input: Consider Input: Context: Bobby ate 17 pieces of candy. Then he ate 15 more. If he initially had 36 pieces of candy 

 Question: How many pieces of candy does he still have left?


Output: 4