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:
[157.423, -98.775, -67.748, 25.759, 24.697, 150.289, -68.457, 212.57, -9.355]

Ex Output:
36.267


Ex Input:
[109.109, -95.395, 5.04, 45.497, 56.443, -72.916]

Ex Output:
7.963


Ex Input:
[88.079, -0.181, -14.222, -73.581, 18.433, -14.843]

Ex Output:

0.614