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.

Q: Context: 6 storks and 2 birds were sitting on the fence. 3 more birds came to join them. 

 Question: How many more storks than birds are sitting on the fence?

A: 1
****
Q: Context: Some campers went rowing in the morning while 7 campers went rowing in the afternoon. If a total of 60 campers went rowing that day 

 Question: How many campers went rowing in the morning?

A: 53
****
Q: Context: A school has 485 pupils. There are 232 girls and the rest are boys. 

 Question: How many boys are there in that school?

A:
253
****