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: [-71.745, -18.239, 214.837, -22.915, 180.841, -4.641]

SOLUTION: 46.356

PROBLEM: [139.238, 225.164, -21.563, -22.339, -77.136, 96.772, -40.208, 121.974, 228.852]

SOLUTION: 72.306

PROBLEM: [162.26, 79.268]

SOLUTION:
120.764