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: [113.238, 247.072, -31.448, -33.563, 74.519, 67.841]

Output: 72.943


Input: Consider Input: [-46.113, 125.487, 133.801, 230.957, 217.606, 147.203, -27.73, 66.455, -96.494]

Output: 83.464


Input: Consider Input: [225.962, -72.89, -78.365, 30.723, 3.536]


Output: 21.793


