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: [-37.099, -89.464, -34.023, 210.086, -41.029, 189.978, 194.055]

56.072