You are given a math word problem and you are supposed to apply a single mathematical operators like addition, subtraction, multiplication or division on the numbers embedded in the text to answer the following question and then only report final the numerical answer.

Example Input: There were a total of 323 football games in the season . The season is played for 17 months . How many football games were played each month , if each month has the same number of games ?
Example Output: 19

Example Input: Zach scored 42 points in the football game . Ben scored 21 points . How many more points did Zach score ?
Example Output: 21

Example Input: John weighs 81 pounds . Roy weighs 4 pounds . How much heavier is John than Roy ?
Example Output:
77