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: Josh had 15 marbles in his collection. He found 9 marbles while he lost 23 marbles. 

 Question: How many more marbles did he lose than those he found?
Example Output: 14

Example Input: Context: A book has 3 chapters. The first chapter is 35 pages long the second chapter is 18 pages long and the third chapter is 3 pages long. 

 Question: How many more pages does the second chapter have than the third chapter?
Example Output: 15

Example Input: Context: After Olivia visited a supermarket there were 29 dollars left. If there were 54 dollars in her wallet initially 

 Question: How much did she spend?
Example Output:
25

