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: Bobby ate 38 pieces of candy. Then he ate 36 more. He also ate 16 pieces of chocolate.

Question: How many more pieces of candy than chocolate did Bobby eat?
Example Output: 58

Example Input: Context: Jesse has 18 square feet of carpet. If her room is 4 feet long and 20 feet wide

Question: How much more carpet does she need to cover the whole floor?
Example Output: 62

Example Input: Context: After eating a hearty meal they went to see the Buckingham palace. There, Rachel learned that 45 visitors came to the Buckingham palace on the previous day. If 829 people visited the Buckingham palace within the past 85 days

Question: How many visitors visited the Buckingham palace on that day?
Example Output:
784