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: [116.074, 213.452, 86.981]

Output: 138.836


Input: Consider Input: [175.015, 7.294, -30.146, 197.862, 76.557, 16.567, 176.301]

Output: 88.493


Input: Consider Input: [212.152, 148.978, 43.118, 195.466, 212.311, 175.256, -35.062, 146.384]


Output: 137.325