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.

[EX Q]: allen shiela 's brother likes to play with blocks . shiela repainted allen 's old blocks in different colors . if allen has 49 identical blocks and there are 7 blocks for every color of paint used how many colors did shiela use ?
[EX A]: 7

[EX Q]: when she got to school she saw that the school is composed of 9 buildings each having 30 classrooms . how many classrooms does the school have ?
[EX A]: 270

[EX 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 ?
[EX A]:
30