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: [239.565, 124.578, 160.831, 206.161, 26.952, 72.424, 55.933, 235.947]

140.299