TASK 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.
PROBLEM: [82.439, -85.167, 100.665, -83.297]

SOLUTION: 3.66

PROBLEM: [216.883, -37.346, 67.498, 41.686, 140.857, 195.57]

SOLUTION: 104.191

PROBLEM: [173.023, 189.373, 23.963]

SOLUTION:
128.786