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: [-20.155, -42.404]

SOLUTION: -31.28

PROBLEM: [66.037, 30.958, 124.853]

SOLUTION: 73.949

PROBLEM: [58.281, 201.042, 140.982, 176.047, -61.802, 165.234]

SOLUTION:
113.297