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.

Input: Consider Input: A petri dish originally contained 600 bacteria. A scientist let thebacteria grow and now there are 8917 of them. How many morebacteria are there now?

Output: 8317.0


Input: Consider Input: This afternoon Craig left school, rode the bus 3.8 miles, and then walked 0.2 mile to get home. How much farther did Craig ride than walk?

Output: 3.6


Input: Consider Input: Mary found 2 seashells and Keith found 5 seashells on the beach.When they cleaned them, they discovered that 9 were cracked. Howmany seashells did they find together?


Output: 7.0