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: [-60.041, -56.779, 6.2, 73.114, 137.319]

SOLUTION: 19.963

PROBLEM: [139.608, 17.516, 100.5, -51.362, 57.462, -77.569, -95.41, -24.339, -96.579]

SOLUTION: -3.353

PROBLEM: [93.903, -39.959, 159.483, 32.364, 2.595]

SOLUTION:
49.677