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: [35.47, -32.47, -93.557, 152.479, 190.059, 67.967, 93.939, 54.545, 27.758, 74.86]

57.105