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: Robin has 27 packages of gum . There are 18 pieces in each package . How many pieces of gum does Robin have ?
Example Output: 486

Example Input: A marine biologist measured 1 fish that was 0.3 foot long and a second fish that was 0.2 foot long . How much longer was the first fish ?
Example Output: 0.1

Example Input: Joan went to 4 football games this year . She went to 9 football games last year . How many football games did Joan go to in all ?
Example Output:
13