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:
[34.718, 46.286, 107.22, 181.771, -27.702, -66.747]

Ex Output:
45.924


Ex Input:
[125.987, 140.164, 103.07, -78.923, -92.734, -96.888]

Ex Output:
16.779


Ex Input:
[172.017, -96.405, -85.336, 169.687, -90.702, 226.006]

Ex Output:

49.211