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: [-52.444, 112.084, 178.657, -54.459, -87.991, 246.326, 148.402, 123.572, -34.311, 183.622]

76.346