You are given a math word problem and you are supposed to apply multiplication or division mathematical operators on the numbers embedded in the text to answer the following question and then only report the final numerical answer.

Example Input: Brenda wants to split a collection of erasers into groups of 90 . Brenda has 270 erasers . How many groups will be created ?
Example Output: 3

Example Input: Michelle has 7 boxes of crayons . Each box holds 5 crayons . How many crayons does Michelle have ?
Example Output: 35

Example Input: A new building needed 14 windows . The builder had already installed 5 of them . If it takes 4 hours to install each window , how long will it take him to install the rest ?
Example Output:
36