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: [203.498, -79.59, -73.767, -65.942, -8.693]

Output: -4.899


Input: Consider Input: [-28.295, -24.828, -66.96, -12.108, -96.597, 110.99, 172.86, -18.752, 157.717]

Output: 21.559


Input: Consider Input: [195.469, 110.294, 150.829, 116.396, 133.183, 75.968, -18.798, 56.574, 67.084]


Output: 98.555