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: Olivia was making baggies of cookies with 9 cookies in each bag . If she had 13 chocolate chip cookies and 41 oatmeal cookies , how many baggies could she make ?
Example Output: 6

Example Input: A new building needed 9 windows . The builder had already installed 6 of them . If it takes 6 hours to install each window , how long will it take him to install the rest ?
Example Output: 18

Example Input: In fourth grade there were 11 students at the start of the year . During the year 6 students left and 42 new students came to school . How many students were in fourth grade at the end ?
Example Output:
47