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: Oliver was organizing his baseball cards in a binder with 3 on each page . If he had 2 new cards and 10 old cards to put in the binder , how many pages would he use ?
Example Output: 4

Example Input: A company invited 47 people to a luncheon , but 7 of them did n't show up . If the tables they had held 5 people each , how many tables do they need ?
Example Output: 8

Example Input: Roger had 16 dollars . For his birthday he got 28 more dollars but spent 25 on a new game . How much money does he have now ?
Example Output:
19