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.

Ex Input:
[-48.196, 15.566, 65.782, 174.566, -91.786, 52.379, 2.658, 76.856]

Ex Output:
30.978


Ex Input:
[-51.709, 7.971, 56.819, 147.653, 82.016, 33.283, 17.84, -45.317, 152.854, 6.908]

Ex Output:
40.832


Ex Input:
[-10.586, 79.912, 162.956, 62.621, 20.17, 175.22, 19.366, 134.958, 136.12]

Ex Output:

86.749