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:
[70.553, 193.054, 166.173, 115.812]

Ex Output:
136.398


Ex Input:
[-51.603, 117.351, -67.451, 218.664, 68.981, 167.005, -53.851, 104.996]

Ex Output:
63.012


Ex Input:
[63.528, -87.509, -14.482, 48.942, 123.246, 125.343, 176.487, -48.536, 134.705, 104.147]

Ex Output:

62.587