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.
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Question: A restaurant served 7 slices of pie during lunch and 5 during dinner today . It served 8 of them yesterday . How many slices of pie were served today ?

Answer: 12


Question: Mike has 8 orange marbles , he gave Sam 4 of the marbles . How many orange marbles does he now have ?

Answer: 4


Question: You go out for a long walk . You walk 0.75 mile and then sit down to take a rest . Then you walk 0.25 of a mile . How far did you walk altogether ?

Answer:
1