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: Keith has 20 books . Jason has 21 books . How many books do they have together ?
Example Output: 41

Example Input: Jonah added 0.3 cup of yellow raisins and 0.4 cup of black raisins to a batch of trail mix . How many cups of raisins did Jonah add in all ?
Example Output: 0.7

Example Input: Joan purchased a basketball game for $ 5.2 , and a racing game for $ 4.23 . How much did Joan spend on video games ?
Example Output:
9.43