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: [68.017, -84.821, -80.681, 153.794, 108.464, 0.734, -60.638, 141.255]

30.766