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: [5.703, -17.365, 21.827, 38.836, 5.17, -15.533]

SOLUTION: 6.44

PROBLEM: [85.011, -20.439, 195.195, 114.286]

SOLUTION: 93.513

PROBLEM: [189.685, -25.871, -52.902, -86.659]

SOLUTION:
6.063