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: [230.4, 180.032, 189.98, 128.532, 62.211, 100.423, 15.212, 23.843, 89.555, 33.028]

105.322