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: [179.144, 114.883, -6.86, 137.104, 4.024, 55.61, 169.274, -60.246, 66.322, -92.91]

Output: 56.634

Input: Consider Input: [124.333, 5.477, -53.787, 226.538, -40.577, -43.102, 214.118, 125.785, 151.837]

Output: 78.958

Input: Consider Input: [17.792, -87.519, 126.087, -52.176, 157.829, -45.206, 173.143, 91.596]
Output: 47.693