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: [178.031, -52.967, 31.914, 174.681, 155.375, -3.831, 165.333, 10.246, -14.468]

Output: 71.59


Input: Consider Input: [132.779, 126.164, 97.743, -59.174, -55.441]

Output: 48.414


Input: Consider Input: [206.606, -76.103, -16.863, 44.126, 4.019, 15.088]


Output: 29.479