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.

Ex Input:
Charles has 4 apples . Jessica gives Charles 39 more . How many apples does Charles have in all ?

Ex Output:
43


Ex Input:
A farmer estimates that he will harvest 48097 bushels of wheat . The weather is perfect during the growing season , so he harvests 684 more bushels of wheat than expected . How many bushels of wheat does the farmer harvest ?

Ex Output:
48781


Ex Input:
Robin has 9 packages of gum . There are 15 pieces in each package . How many pieces of gum does Robin have ?

Ex Output:

135