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: [65.735, -8.202, 203.181, 71.57, -48.851, -17.165, 172.465, -97.079]

42.707