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: [113.021, 101.946, -14.79, -8.555, -59.095, -74.169, 80.193, 157.87, 26.321, -19.87]

SOLUTION: 30.287

PROBLEM: [-46.113, 125.487, 133.801, 230.957, 217.606, 147.203, -27.73, 66.455, -96.494]

SOLUTION: 83.464

PROBLEM: [-66.768, 102.414, 16.822, 237.427, 202.346, 28.853, 210.711, -11.824, -63.676, 242.05]

SOLUTION:
89.836