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.

[EX Q]: Each year , salmon travel upstream , going from the ocean to the rivers where they were born . This year , 712261 male and 259378 female salmon returned to their rivers . How many salmon made the trip ?
[EX A]: 971639

[EX Q]: George has 5 boxes of eggs . Each box holds 3 eggs and there are 9 boxes in a case . How many eggs does George have ?
[EX A]: 15

[EX Q]: A restaurant served 9 pizzas during lunch and 6 during dinner today . How many pizzas were served today ?
[EX A]:
15