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:
[-36.318, 176.066, 36.435, 132.732, -15.887, -24.851, 169.963, -98.796, 38.818]

Ex Output:
42.018


Ex Input:
[229.28, 202.632, 129.717, 211.459, 203.204]

Ex Output:
195.258


Ex Input:
[-49.56, -67.173, 81.09, 160.544, 180.924]

Ex Output:

61.165