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: There were 8 friends playing a video game online when 3 players quit . If each player left had 3 lives , how many lives did they have total ?
Example Output: 15

Example Input: Sam had saved up 8 dollars . If he received another 7 dollars for his allowance , how many 3 dollar toys could he buy ?
Example Output: 5

Example Input: For Halloween Robin scored 23 pieces of candy . She ate 7 pieces the first night and then her sister gave her 21 more pieces . How many pieces of candy does Robin have now ?
Example Output:
37