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: [44.551, 103.746, 126.246, -67.048, 217.617, 235.435, 84.994, 136.789]

110.291