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: [-90.211, -60.08, 99.87, 18.704, 197.269, 173.722, 168.875]

SOLUTION: 72.593

PROBLEM: [208.678, 219.921, 113.318, 23.83, -42.88, -32.702, -36.191, 117.84, 91.988]

SOLUTION: 73.756

PROBLEM: [119.218, 92.798, -70.939, -42.105, 12.344]

SOLUTION:
22.263