Instructions: 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: [-37.876, 206.008, 81.824, 205.696, -31.94, 165.356]
Output:
98.178