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: Helen the hippo and her friends are preparing for thanksgiving at Helen's house. Helen baked 19 chocolate chip cookies yesterday and 231 raisin cookies and 237 chocolate chip cookies this morning.

Question: How many more chocolate chip cookies than raisin cakes did Helen bake?
Example Output: 25

Example Input: Context: In a school there are 34 girls and 841 boys.

Question: How many more boys than girls does the school have?
Example Output: 807

Example Input: Context: There were some roses in the vase. Jessica cut 16 more roses from her flower garden and put them in the vase. There are now 23 roses in the vase.

Question: How many roses were there in the vase at the beginning?
Example Output:
7