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.

Ex Input:
Context: Baker made 54 cakes. He sold some of them. If he still has 13 cakes left 

 Question: How many cakes did baker sell?

Ex Output:
41


Ex Input:
Context: Lawrence county has 313473 kids. During summer break 274865 kids stay home and the rest go to camp. 

 Question: How many kids go to the camp during the break?

Ex Output:
38608


Ex Input:
Context: 2 children were riding on the bus. At the bus stop some more children got on the bus. Then there were 10 children altogether on the bus. 

 Question: How many more children are on the bus now than there were before the bus stop?

Ex Output:

8