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:
[-92.0, 108.814, 164.207, 94.26, 33.74]

Ex Output:
61.804


Ex Input:
[112.026, 20.03, 73.595, -24.957, 185.718, 36.43, 206.024]

Ex Output:
86.981


Ex Input:
[40.47, 100.394, 192.826, 167.18]

Ex Output:

125.218