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:
Jason found 49 seashells and 48 starfish on the beach . He gave 13 of the seashells to Tim . How many seashells does Jason now have ?

Ex Output:
36


Ex Input:
There are 35 bottle caps in Beverly 's bottle cap collection . If the bottle caps are organized into 7 groups , how big is each group ?

Ex Output:
5


Ex Input:
Marta picked 2 pumpkins . The first pumpkin weighed 4 pounds , and the second pumpkin weighed 8.7 pounds . How much did the 2 pumpkins weigh all together ?

Ex Output:

12.7