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: [5.809, 237.03, 58.665, 237.936, 35.419, 44.632, 3.692, 80.363]

87.943