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.
Input: [-75.286, 109.366, 206.553, -13.711, 118.983, -38.827, 233.569, -35.763]

63.11