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: [70.553, 193.054, 166.173, 115.812]

Output: 136.398


Input: Consider Input: [103.885, 191.867, 82.228, 177.708, 136.093, -17.022]

Output: 112.46


Input: Consider Input: [103.248, 183.858, -6.812, 18.919, 217.179, -95.592]


Output: 70.133