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: [72.326, -74.6, 127.566, -54.848, 198.529, -44.061, -28.155]

SOLUTION: 28.108

PROBLEM: [166.542, 216.326, 98.969, -96.779, 33.532]

SOLUTION: 83.718

PROBLEM: [237.061, 157.598, 239.678, 135.432, 186.198, -70.821, 237.869, -66.916]

SOLUTION:
132.012