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: [176.423, 236.2, 216.6, 222.181, 133.478, 5.495, -41.237, 27.421]

122.07