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: [248.095, 230.389, 43.792, 2.001, 170.702, 153.847, 172.626, 32.591, 166.099, -33.334]

118.681