instruction:
You are given a math word problem and you are supposed to apply a single mathematical operators like addition, subtraction, multiplication or division on the numbers embedded in the text to answer the following question and then only report final the numerical answer.
question:
A cereal box holds 18 cups of cereal . Each serving is 2 cups . How many servings are in the whole box ?
answer:
9


question:
William starts with 15 tickets . He buys 3 more . How many tickets does William end with ?
answer:
18


question:
Joan picked 43 apples from the orchard , and gave 27 apples to Melanie . How many apples does Joan have now ?
answer:

16