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:
[102.553, 221.594, -69.406, 192.534, 139.703, -38.208, 228.963, 32.921]

Ex Output:
101.332


Ex Input:
[122.737, 189.477, -4.853, 150.031, 126.296, 240.809, 204.743, 29.178]

Ex Output:
132.302


Ex Input:
[-28.295, 59.082, 185.826, -78.615, 48.391]

Ex Output:

37.278