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: [159.243, 17.964, 13.543, 175.402, -52.441, -34.741, 158.461]

Output: 62.49


Input: Consider Input: [-59.526, 55.871, 118.248, 197.073]

Output: 77.916


Input: Consider Input: [214.108, -10.35, 112.313, 53.317, 183.753, 245.498, 204.905, 68.753, 164.122]


Output: 137.38