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: [222.94, 54.014, 232.208, -16.089, 214.915, 2.232]

SOLUTION: 118.37

PROBLEM: [220.903, 155.959]

SOLUTION: 188.431

PROBLEM: [175.192, 122.415, 188.399, 208.089, 215.215, -53.569]

SOLUTION:
142.624