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: Randy has 86 blocks. He uses 79 blocks to build a tower and 82 blocks to build a house. 

 Question: How many more blocks did he use to build the house than he did to build the tower?
Example Output: 3

Example Input: Context: Baker made 54 cakes and 143 pastries. If he sold 68 cakes and 92 pastries 

 Question: How many more pastries than cakes did baker sell?
Example Output: 24

Example Input: Context: There were 12 roses and 2 orchids in the vase. Jessica cut some more roses and orchids from her flower garden. There are now 10 roses and 21 orchids in the vase. 

 Question: How many orchids did she cut?
Example Output:
19