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.

[-44.977, 79.906, -20.036]
4.964

[-19.26, 130.53, 225.367, 179.475, -63.39]
90.544

[107.015, 23.458]

65.237