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: [30.448, 132.545, 166.304, 202.59]

SOLUTION: 132.972

PROBLEM: [224.131, -2.975, 101.116, 127.048, -67.279, -25.825, 136.475, -51.855, 117.178, 219.264]

SOLUTION: 77.728

PROBLEM: [8.298, -94.746, -72.935]

SOLUTION:
-53.128