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: [199.153, 182.13, -7.832, -60.259]

Output: 78.298


Input: Consider Input: [87.02, -25.654, -67.979, 52.368, 20.078, 160.939, 4.162, 205.092, -57.092, -68.35]

Output: 31.058


Input: Consider Input: [197.73, 206.105, 102.402, 38.741, 116.866, 78.231, 138.568]


Output: 125.52