In this task you will be given a list of numbers and you need to find the mean (average) of that list. The mean of a list can be found by summing every number in the list then dividing the result by the size of that list. The output should be rounded to 3 decimal places.

Input: Consider Input: [91.408, 178.508, 77.081, 13.419, 185.372, 158.828]

Output: 117.436


Input: Consider Input: [188.006, 117.583, 51.262]

Output: 118.95


Input: Consider Input: [-34.026, 86.773, 149.194, 228.14]


Output: 107.52