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: [131.164, 99.999, 138.488, 57.264, -40.069, -82.402, -42.836]

Output: 37.373


Input: Consider Input: [5.703, -17.365, 21.827, 38.836, 5.17, -15.533]

Output: 6.44


Input: Consider Input: [96.422, 173.409, 203.795, 234.155]


Output: 176.945