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: [-97.524, -44.575, 213.291, -6.679, 75.572, 142.403, 176.858, -83.553]

46.974