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: [242.148, 97.472, -15.031, 246.784, 54.233, -27.114]

SOLUTION: 99.749

PROBLEM: [208.678, 219.921, 113.318, 23.83, -42.88, -32.702, -36.191, 117.84, 91.988]

SOLUTION: 73.756

PROBLEM: [-19.96, 96.791, 76.101, -30.623]

SOLUTION:
30.577