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: [-96.502, 12.006]

Output: -42.248


Input: Consider Input: [226.383, 37.978, 174.444, 117.212]

Output: 139.004


Input: Consider Input: [242.395, -30.85, 10.764, 112.975, 135.905, 151.714, 22.596, 214.319]


Output: 107.477