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: [152.05, 174.962, 23.572, 72.845, -33.477, -76.49, -91.234, 45.782]

33.501