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: [213.2, 159.287, 214.859, 189.464, 185.706, -85.847, 215.647, 8.545]

SOLUTION: 137.608

PROBLEM: [148.261, -51.308, -98.748, -41.832, 44.313, -41.042, -19.943]

SOLUTION: -8.614

PROBLEM: [14.155, 124.512, 14.467, -94.133, -3.907, 48.416]

SOLUTION:
17.252