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.
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Question: faye had 12 apps on her phone . to free up some space she deleted 8 of the apps . how many apps did she have left ?

Answer: 4

Question: an architect was building his 2 story house . on the first floor the house had 6 bedrooms and the second floor had 4 bedrooms . how many bedrooms does the house have totaled ?

Answer: 10

Question: gwen had 10 fish and her sister had 5 fish . how many fish did they have total ?

Answer:
15