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: [-74.139, -62.711, 83.1, 211.243, -2.696, 30.722, 79.262, 230.335]

SOLUTION: 61.89

PROBLEM: [74.601, 131.018, -45.91]

SOLUTION: 53.236

PROBLEM: [33.767, 183.607, 248.907, -59.363, 224.984, 201.789]

SOLUTION:
138.948