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:
In Yardley it snowed 0.125 inch in the morning and 0.5 inch in the afternoon . What was the total amount of snowfall ?

Ex Output:
0.625


Ex Input:
There are 97 erasers in a box . Ernest has 17 erasers in a bag . Mark takes 97 erasers out of the box . How many erasers are left in the box ?

Ex Output:
0


Ex Input:
Karen added 0.25 cup of walnuts to a batch of trail mix . Later , she added 0.25 cup of almonds . How many cups of nuts did Karen put in the trail mix in all ?

Ex Output:

0.5