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: [78.832, 234.037, 38.241, 240.8, 69.32, -84.962, -27.847, 93.799]

80.278