You are provided with an arithmetic question. Your task is to compute the solution using the given arithmetic operations. The only arithmetic operators needed to answer the questions are'+'(addition) and'-'(subtraction). The answer should be correct to one decimal place.

Example Input: Suzie found 2 worms in the yard and measured them with a ruler. One worm was 0.8 inch long. The other worm was 0.1 inch long. How much longer was the longer worm?
Example Output: 0.7

Example Input: Stanley ran 0.4 mile and walked 0.2 mile. How much farther did Stanley run than walk?
Example Output: 0.2

Example Input: Suzie found 2 worms in the yard and measured them with a ruler. One worm was 0.8 inch long. The other worm was 0.1 inch long. How much longer was the longer worm?
Example Output:
0.7

