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: [246.363, 47.04, -80.805, 163.312, 236.199, -88.808, 119.739, 106.244, -19.212, 94.629]

82.47