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: [211.292, 92.275, 128.423, 242.327, -54.053, 89.501, 64.784]

Output: 110.65


Input: Consider Input: [-75.579, -19.294, 243.752, 167.559, 86.218, 48.102, 28.694, 31.259, 182.995]

Output: 77.078


Input: Consider Input: [-6.37, 245.198, 249.345, 94.793]


Output: 145.742


