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: [85.011, -20.439, 195.195, 114.286]

Output: 93.513


Input: Consider Input: [199.974, 2.205, 197.996, 172.426, 182.153, 42.045, 53.238, 18.021, 83.903]

Output: 105.773


Input: Consider Input: [139.696, -44.035, 56.719, 110.155, 129.67, 212.561]


Output: 100.794