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:
[93.048, 173.783, 88.736, -95.085, -77.155, -2.381, -84.313]

Ex Output:
13.805


Ex Input:
[237.861, 119.858, -8.107, -30.075, 180.524]

Ex Output:
100.012


Ex Input:
[28.48, 65.599, 32.297, 189.983, -23.007]

Ex Output:

58.67