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.

Input: Consider Input: [-71.118, 160.927, 230.116, -26.655, -4.297, 64.272, 72.304, 41.517, 242.068]

Output: 78.793

Input: Consider Input: [202.724, 129.438, -75.21, 114.102, 151.266]

Output: 104.464

Input: Consider Input: [-84.94, 142.21, 234.406, 22.533, -56.631, 209.944, -25.071, 152.08]
Output: 74.316