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:
Our class got 54 books from the library . Then we got 23 more books from the library . How many books did our class get from the library ?

Ex Output:
77


Ex Input:
There are 34 dogwood trees currently in the park . Park workers will plant 49 dogwood trees today . How many dogwood trees will the park have when the workers are finished ?

Ex Output:
83


Ex Input:
Lino picked up 292 shells at the seashore in the morning and 324 shells in the afternoon . How many shells did he pick up in all ?

Ex Output:

616