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.

Input: Consider Input: Mike found 6 seashells and 4 starfish , but 4 of the seashells were broken . How many unbroken seashells did Mike find ?

Output: 2


Input: Consider Input: Dan has 5 blue marbles . Mary has 2 times more blue marbles than Dan . How many blue marbles does Mary have ?

Output: 10


Input: Consider Input: Sarah has 26 bottle caps . She buys 3 more . How many bottle caps does Sarah have in all ?


Output: 29