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.

Input: Consider Input: A worksheet had 3 problems on it . If a teacher had 15 worksheets to grade and had already graded 7 of them , how many more problems does she have to grade ?

Output: 24

Input: Consider Input: Wendy uploaded 22 pictures from her phone and 2 from her camera to facebook . If she sorted the pics into 4 different albums with the same amount of pics in each album , how many pictures were in each of the albums ?

Output: 6

Input: Consider Input: At Oliver 's Restaurant a group with 2 adults and 4 children came in to eat . If each meal cost 3 dollars , how much was the bill ?
Output: 18