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: [227.874, 175.626, 193.094, 63.963, 139.938]

SOLUTION: 160.099

PROBLEM: [-81.432, -63.059, 150.144, 55.203, 215.405, -89.797, 72.946]

SOLUTION: 37.059

PROBLEM: [237.481, 130.133, 119.461, 14.542, 156.076, 14.023, -99.349, 71.227]

SOLUTION:
80.449