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: [229.461, -89.251, 170.954]

Output: 103.721


Input: Consider Input: [24.119, 239.006, 239.873, 236.27, 134.34]

Output: 174.722


Input: Consider Input: [183.968, 72.9, -62.314, 191.214, 78.442, 29.207]


Output: 82.236


