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: [151.105, -63.975, 232.671, 86.95, 77.15, 218.299, 107.023, 92.972]

112.774