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.

Example Input: There were 58 geese and 37 ducks in the marsh . How many birds were there in all ?
Example Output: 95

Example Input: 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 ?
Example Output: 971639

Example Input: Andrew spent 3 day working on his Science report . He worked for 2.5 hours each day . How many hours did he work ?
Example Output:
7.5