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: [66.666, -70.196, -39.152]

Output: -14.227


Input: Consider Input: [9.828, 248.054, 20.871, 99.749, 52.797, -86.856, 65.438, 53.627]

Output: 57.939


Input: Consider Input: [201.298, 226.103, -41.559, 82.924]


Output: 117.191