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: [126.177, 120.225, 231.498, 170.694, 34.361, 101.823, -21.468, 234.339]

SOLUTION: 124.706

PROBLEM: [-3.302, 23.685, 69.661, 74.979, -46.96]

SOLUTION: 23.613

PROBLEM: [-23.601, 116.411, 185.479, 9.0, 100.544, 225.564, -29.135]

SOLUTION:
83.466