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: [103.885, 191.867, 82.228, 177.708, 136.093, -17.022]

SOLUTION: 112.46

PROBLEM: [-49.786, 238.124, -20.697, 32.014]

SOLUTION: 49.914

PROBLEM: [87.234, -30.861, 221.46, 120.15, -85.065, 67.024, 144.174, -64.546]

SOLUTION:
57.446