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.
[-83.979, -47.738, 246.23, 247.948, 110.267, -29.899, -93.927, -95.769]