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: [211.292, 92.275, 128.423, 242.327, -54.053, 89.501, 64.784]

SOLUTION: 110.65

PROBLEM: [198.323, 108.702, 38.704, -8.85, 57.749, 108.604, -20.56, 229.826, -85.953, 177.128]

SOLUTION: 80.367

PROBLEM: [239.944, 88.069, -6.963, 134.104]

SOLUTION:
113.788