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:
[9.828, 248.054, 20.871, 99.749, 52.797, -86.856, 65.438, 53.627]

Ex Output:
57.939


Ex Input:
[209.13, -12.632, 247.489, 55.492, 8.967, -90.158, 193.743]

Ex Output:
87.433


Ex Input:
[102.962, -12.02, 181.008, -23.382, 39.984, -58.016, 132.51, 21.728, 160.143]

Ex Output:

60.546