instruction:
You are given a math word problem and you are supposed to apply an addition mathematical operator on the numbers embedded in the text to answer the following question and then only report the final numerical answer.
question:
Context: A waiter had 12 customers. After some left he still had 14 customers. Then he got 10 new customers 

 Question: How many customers does he have now?
answer:
24


question:
Context: There were 10 roses in the vase. Jessica cut 8 more roses from her flower garden and put them in the vase. 

 Question: How many roses are there in the vase now?
answer:
18


question:
Context: Ed had 10 more marbles than Doug. Doug lost 11 of his marbles at the playground. If Ed had 45 marbles 

 Question: How many more marbles did Ed have than Doug then?
answer:

21