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: [20.538, 100.835, -23.197, 207.707, -12.758, 152.97, 190.404]

SOLUTION: 90.928

PROBLEM: [246.744, 206.484, 194.841]

SOLUTION: 216.023

PROBLEM: [-7.495, -19.085, 62.044, 133.407, 73.102, 123.355, 171.87]

SOLUTION:
76.743