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: James has 1222 balloons . Amy has 513 balloons . How many more balloons does James have than Amy ?
Example Output: 208

Example Input: The tallest player on the basketball team is 77.75 inches tall . This is 9.5 inches taller than the shortest player . How tall is the shortest player , in inches ?
Example Output: 68.25

Example Input: A lawyer bills her clients 200 dollars per hour of service . If a client 's case requires 39 hours to complete , use proportion to calculate how much the client will owe the lawyer in dollars .
Example Output:
7800