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: [136.816, 121.886, 38.032, 81.322, -0.781, 112.95, 49.478, 219.21, -42.397]

SOLUTION: 79.613

PROBLEM: [184.477, 178.133, 206.128, 148.349, 50.82, 33.624, 196.968, 179.804]

SOLUTION: 147.288

PROBLEM: [-25.217, 207.852, 53.965, 203.61]

SOLUTION:
110.053