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: when she got to school she saw that the school is composed of 9 buildings each having 30 classrooms . how many classrooms does the school have ?
Example Output: 270

Example Input: the kids from oakwood elementary school are visiting a bird zoo for their field trip . to get to the bird zoo from the school the kids have to ride some buses . if there are 7 buses and each bus has 3 adult supervisors to guide the children how many supervisors are there in total ?
Example Output: 21

Example Input: rachel bought 8 music albums online . if each album had 2 songs how many songs did she buy total ?
Example Output:
16