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: [195.105, 219.714, 104.566, 163.792, -37.969, 180.779, 86.241, -26.298]

110.741