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: [41.154, 104.921, -57.969, -36.61, 249.807, 42.662, 142.148, 14.486, -48.767, -93.829]

35.8