Given a math word problem, answer the following question. You might need to apply addition or subtraction mathematical operators on the numbers embedded in the text to answer the question and then only report the final numerical answer.

[Q]: when amy got to the fair she had $ 15 . when she left she had $ 11 . how much money did she spend at the fair ?
[A]: 4

[Q]: the town of milburg has 5256 grown-ups and 2987 children . how many people live in milburg ?
[A]: 8243

[Q]: rosa had 67 flowers . andre gave her some more flowers . now rosa has 90 flowers . how many flowers did andre give to rosa ?
[A]:
23