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: [238.315, 168.986, -67.694]

Output: 113.202


Input: Consider Input: [72.755, 233.932, 245.785, 92.401]

Output: 161.218


Input: Consider Input: [108.347, -52.675, 169.084, 39.611, 39.009]


Output: 60.675