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:
[-40.016, 117.495]

Ex Output:
38.74


Ex Input:
[26.145, -44.254, 127.581, 162.122, 82.003, 143.809, 96.47, 34.362, 71.469]

Ex Output:
77.745


Ex Input:
[2.994, 206.185, -78.434, 75.704, 214.018, -58.807, -3.311, 145.248, 203.983, 184.978]

Ex Output:

89.256