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:
[41.081, 166.314, -14.556, -84.648, -8.286]

Ex Output:
19.981


Ex Input:
[-48.12, 192.63, 32.454, 132.703, -26.044, 140.006, -8.624, 38.438]

Ex Output:
56.68


Ex Input:
[116.151, 209.623, -17.375, -10.235, 41.981, 39.065]

Ex Output:

63.202