instruction:
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.
question:
there were 28 girls and 35 boys on the playground at recess . how many children were there in all ?
answer:
63


question:
when maria got to the fair she had $ 87 . when she left she had $ 16 . what 's the difference between the number of dollars when maria got and left the fair ?
answer:
71


question:
frank bought his family 14 pieces of chicken for dinner . if they only ate 7 how many pieces does he have left ?
answer:

7


