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: Martha starts with 3 cards . She gets 76 more from Emily . How many cards does Martha end with ?
Example Output: 79

Example Input: There are 22 walnut trees currently in the park . Park workers will plant walnut trees today . When the workers are finished there will be 55 walnut trees in the park . How many walnut trees did the workers plant today ?
Example Output: 33

Example Input: There are 31 calories in a candy bar . How many calories are there in 11 candy bars ?
Example Output:
341