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:
[41.212, 221.072, 226.666, 3.688, 180.239, 142.767, 184.012, 63.249]

Ex Output:
132.863


Ex Input:
[125.67, 5.514, 161.93, 107.05, 118.949, 233.815, 230.211]

Ex Output:
140.448


Ex Input:
[-30.77, 203.781]

Ex Output:

86.506