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: Consider Input: [218.46, 7.937, 155.624, 82.813, 93.516]

Output: 111.67


Input: Consider Input: [219.428, 229.08, 24.616, -83.165, -28.839, 195.219, 170.491, -78.673]

Output: 81.02


Input: Consider Input: [164.521, 75.123, -96.715]


Output: 47.643