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: John can read 4 books a day . John reads every Monday and Tuesday . How many books would John read in 6 weeks ?
Example Output: 48

Example Input: In 1986 , there were 1125 students in Central High School . The number of students enrolled in 1987 was 4 % less than in 1986 . How many students were enrolled in 1987 ?
Example Output: 1080

Example Input: The school cafeteria ordered 33 red apples and 23 green apples for students lunches . But , if only 21 students wanted fruit , how many extra did the cafeteria end up with ?
Example Output:
35