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:
[51.02, -71.125, 178.19, -7.234, -99.571, -17.215]

Ex Output:
5.677


Ex Input:
[160.713, 125.985, 186.982, -94.178, 183.77]

Ex Output:
112.654


Ex Input:
[114.166, 181.338, -42.977, 213.457, 239.234]

Ex Output:

141.044