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:
Greg and Sharon own neighboring cornfields . Greg harvested 0.4 acre of corn on Monday and Sharon harvested 0.1 acre . How many more acres did Greg harvest than Sharon ?

Ex Output:
0.3


Ex Input:
Each banana costs $ 5 . How much do 4 bananas cost ?

Ex Output:
20


Ex Input:
As part of a lesson on earthquakes , a science class is researching the movement of a nearby fault line . The fault line moved 1.25 inches during the past year and 5.25 inches the year before . How far did the fault line move in all ?

Ex Output:

6.5