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:
[-96.182, -37.177, 130.645, -44.92, -12.78, 90.335, -99.791, -11.926, 217.275]

Ex Output:
15.053


Ex Input:
[47.595, -7.171, 4.333, 160.025, 152.275, 90.23, 128.643, 145.181]

Ex Output:
90.139


Ex Input:
[233.84, -38.337, 10.341, 195.901, 68.586, 214.429, 213.823, 88.799]

Ex Output:

123.423