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:
[207.804, 175.122, 13.63, 217.625, -98.484]

Ex Output:
103.139


Ex Input:
[-45.826, -27.376, 126.782, -28.164, 213.819, 186.676]

Ex Output:
70.985


Ex Input:
[40.264, -18.79, 66.705, 31.477, 19.569, 174.417, 0.31, -93.651]

Ex Output:

27.538