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: [30.448, 132.545, 166.304, 202.59]

SOLUTION: 132.972

PROBLEM: [-57.334, 24.995, 72.22, -78.376, 218.297, 203.999, 21.93, -20.246, 15.97]

SOLUTION: 44.606

PROBLEM: [89.776, -37.895, -45.315, 75.805, 144.052, 150.156]

SOLUTION:
62.763