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: Mary is baking a cake. The recipe calls for 6 cups of sugar and 14 cups of flour. She already put in 7 cups of flour and 60 cups of sugar.

Question: How many more cups of flour does she need to add?
Example Output: 7

Example Input: Context: David did 44 push-ups in gym class today. David did 9 more push-ups than Zachary.

Question: How many push-ups did Zachary do?
Example Output: 35

Example Input: Context: Paul got a box of 601 crayons and 406 erasers for his birthday. At the end of the school year he only had 336 crayons left while not having lost a single eraser.

Question: How many more erasers than crayons did he have left?
Example Output:
70