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: [-40.509, 201.39]

SOLUTION: 80.44

PROBLEM: [45.112, 147.024, -15.583, 33.655, -60.031]

SOLUTION: 30.035

PROBLEM: [220.903, 155.959]

SOLUTION:
188.431