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.

[212.456, 6.972, -59.399, -83.342, 215.038, -97.851]
32.312

[-7.775, 55.997, 216.046]
88.089

[7.044, 92.686, 28.935, 16.572, 209.733, 148.783]

83.959