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: [65.591, -56.104, -28.389, -22.521]

Output: -10.356


Input: Consider Input: [21.723, 130.05, 75.095]

Output: 75.623


Input: Consider Input: [26.035, 171.455, 205.166, 109.434, 57.196, 183.555, 196.368, 46.98]


Output: 124.524