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:
[236.753, 184.794, -45.415, 20.278, -41.34, 109.146, 176.83]

Ex Output:
91.578


Ex Input:
[150.321, 169.658, 221.448, 54.785, 160.245, 9.534, 78.865, 229.753, 225.969]

Ex Output:
144.509


Ex Input:
[-98.136, -2.631]

Ex Output:

-50.384