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: [-45.826, -27.376, 126.782, -28.164, 213.819, 186.676]

SOLUTION: 70.985

PROBLEM: [59.291, 108.572, 120.13]

SOLUTION: 95.998

PROBLEM: [104.543, 106.282, 118.886, 148.106, 22.319, -0.743, 147.71, 79.525, 143.437]

SOLUTION:
96.674