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: [168.643, -2.995, 18.22, 148.218, -63.594, 182.707, -41.034, 26.796, 234.636, -19.052]

65.254