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: [-60.041, -56.779, 6.2, 73.114, 137.319]

SOLUTION: 19.963

PROBLEM: [95.725, 112.04, 231.963]

SOLUTION: 146.576

PROBLEM: [148.373, -83.825, 89.807, 149.848, 247.012, 198.749]

SOLUTION:
124.994