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: [-71.118, 160.927, 230.116, -26.655, -4.297, 64.272, 72.304, 41.517, 242.068]

SOLUTION: 78.793

PROBLEM: [-61.563, 49.659, 125.562, 130.542, 75.232, 197.442, 175.182, 54.736, 210.833, 65.27]

SOLUTION: 102.289

PROBLEM: [206.004, -50.48, 136.045, -40.142, -66.883]

SOLUTION:
36.909