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: [14.587, 49.21, -21.274, -54.714, 243.935, 218.436]

SOLUTION: 75.03

PROBLEM: [22.971, 146.947, 84.327, 123.65, -30.682, -43.973, 211.836, 146.398, -65.992]

SOLUTION: 66.165

PROBLEM: [-7.151, -9.873, 208.875, 227.477, 102.689, -9.211, -87.729, 58.21, 38.21, 183.337]

SOLUTION:
70.483