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: [-20.702, 4.455, 37.838, 102.751, 231.6, -23.075, 236.527, 227.109, 171.708, 46.239]

SOLUTION: 101.445

PROBLEM: [165.242, 50.738, -34.087, 77.742, -21.241, -4.541]

SOLUTION: 38.976

PROBLEM: [126.453, 169.516, 109.837, 208.695, 113.906, 56.894, 171.345, 126.81]

SOLUTION:
135.432