Definition: 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: [76.922, -48.098, 210.122, 96.158, 168.93, 186.6, 158.967, -35.674]

101.741