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.

[102.553, 221.594, -69.406, 192.534, 139.703, -38.208, 228.963, 32.921]
101.332

[58.371, 4.131]
31.251

[138.868, 199.042, 85.322, 130.225, 180.975]

146.886