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: [138.526, 60.81, 233.845, -33.602, 189.784, 13.888, 184.543, 53.635, 18.299, -87.132]

SOLUTION: 77.26

PROBLEM: [202.724, 129.438, -75.21, 114.102, 151.266]

SOLUTION: 104.464

PROBLEM: [200.382, 45.685]

SOLUTION:
123.034