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:
Lansing has 25 elementary schools . There are 247 students in each school . How many elementary students are there altogether in Lansing ?

Ex Output:
6175

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

Ex Output:
2

Ex Input:
2 beavers were working on their home . 1 went for a swim . How many beavers are still working on their home ?

Ex Output:
1