You are given a math word problem and you are supposed to apply addition or subtraction mathematical operators on the numbers embedded in the text to answer the following question and then only report the final 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:
At the arcade Dave won 11 tickets . If he spent 5 tickets on a beanie and later won 10 more tickets , how many would he have ?

Ex Output:
16

Ex Input:
The schools debate team had 11 boys and 45 girls on it . If they were split into groups of 7 how many groups could they make ?

Ex Output:
8