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: [-15.843, 236.17, -79.922, -29.879]

SOLUTION: 27.632

PROBLEM: [109.74, 169.0, 195.864, -1.043, 51.968, -56.564, 214.711, -78.61, 212.459, 228.74]

SOLUTION: 104.626

PROBLEM: [223.315, 125.06, -18.815, 110.038]

SOLUTION:
109.9