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: [245.2, 202.565]

Output: 223.882


Input: Consider Input: [231.057, 71.527, 201.799, -5.17, -14.963, -35.693]

Output: 74.76


Input: Consider Input: [160.522, 136.797, -98.376, -11.525, 145.778]


Output: 66.639