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.

[195.542, 52.956, -69.351, 89.485, 119.023, -85.604]
50.342