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: [-73.074, 87.743, 221.875, 126.604, 31.513, 196.863]

SOLUTION: 98.587

PROBLEM: [129.453, 232.284, -34.595]

SOLUTION: 109.047

PROBLEM: [-51.709, 7.971, 56.819, 147.653, 82.016, 33.283, 17.84, -45.317, 152.854, 6.908]

SOLUTION:
40.832