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: Isabel had 72 homework problems . She finished 32 of them but still had 5 pages of problems to do . If each page has the same number of problems on it , how many problems are on each page ?
Example Output: 8

Example Input: Robin 's class is going on a field trip to the zoo . If each van can hold 8 people and there are 22 students and 2 adults going , how many vans will they need ?
Example Output: 3

Example Input: Edward earned 9 dollars for each lawn he mowed . If he had 6 lawns to mow , but forgot to mow 2 of them , how much money did he actually earn ?
Example Output:
36