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.

Ex Input:
[126.177, 120.225, 231.498, 170.694, 34.361, 101.823, -21.468, 234.339]

Ex Output:
124.706


Ex Input:
[197.424, 44.178, 136.316, 246.48, 98.472, -31.327, 41.411]

Ex Output:
104.708


Ex Input:
[166.175, 59.939, 4.039, 162.722, -6.531, 109.488]

Ex Output:

82.639