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: [-31.241, 73.981, 127.71, 166.275, 35.028, -10.432]

Output: 60.22


Input: Consider Input: [-31.252, 246.934, 96.512, 19.356, -50.759, 134.528, 176.914, 17.007, 171.802]

Output: 86.782


Input: Consider Input: [117.198, 217.045, 10.449, 108.17, -54.738, 215.326, 4.34, 12.791]


Output: 78.823