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: [72.755, 233.932, 245.785, 92.401]

SOLUTION: 161.218

PROBLEM: [-72.018, 234.014, 18.724, 190.081, -79.412, -48.925, -78.051, 182.76, 238.348, 48.053]

SOLUTION:
63.357