You are given a math word problem and you are supposed to apply a single mathematical operator like addition, subtraction, multiplication, or division on the numbers embedded in the text to answer the following question and then only report the final numerical answer.

[Q]: 179 birds were sitting in a tree . 38 more birds flew up to the tree . how many birds were there altogether in the tree ?
[A]: 217

[Q]: ed had 22 more marbles than doug . doug lost 8 of his marbles at the playground . how many more marble did ed have than doug then ?
[A]: 30

[Q]: marco and his dad went strawberry picking . together their strawberries weighed 23 pounds . marco 's strawberries weighed 14 pounds . how much did his dad 's strawberries weigh ?
[A]:
9