instruction:
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.
question:
Context: A book has 3 chapters. The first chapter is 91 pages long the second chapter is 23 pages long and the third chapter is 25 pages long. 

 Question: How many more pages does the first chapter have than the second chapter?
answer:
68


question:
Context: After eating a hearty meal they went to see the Buckingham palace. There were 39 paintings in the Buckingham palace. There, Rachel learned that 661 visitors came to the Buckingham palace that day. If there were 600 visitors the previous day 

 Question: How many more visitors visited the Buckingham palace on that day than on the previous day?
answer:
61


question:
Context: Because of the decision Sofia asked the students to suggest specific types of food. If 269 students suggested adding bacon 330 suggested adding mashed potatoes to the menu and 76 suggested adding tomatoes 

 Question: How many more students suggested mashed potatoes than those that suggested bacon?
answer:

61