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: [51.372, 141.276, 8.131, 168.539, 151.323]

SOLUTION: 104.128

PROBLEM: [87.02, -25.654, -67.979, 52.368, 20.078, 160.939, 4.162, 205.092, -57.092, -68.35]

SOLUTION: 31.058

PROBLEM: [-10.586, 79.912, 162.956, 62.621, 20.17, 175.22, 19.366, 134.958, 136.12]

SOLUTION:
86.749