You are given a math word problem and you are supposed to apply multiple mathematical operators 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.

Example Input: their last stop before leaving the zoo is the bird museum . there they went through 7 bird exhibits spending 9 minutes going around each exhibit . how much time did they spend going through the museum ?
Example Output: 63

Example Input: lana had 72 extra nickels . if she put them into stacks with 8 in each stack how many stacks could she make ?
Example Output: 9

Example Input: divide 39 balloons into 7 equal groups . how many balloons are there in each group ?
Example Output:
5.571428571428571