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.

[183.332, -51.581, -15.684, 140.965, 37.376, 37.734, 71.356]
57.643

[113.238, 247.072, -31.448, -33.563, 74.519, 67.841]
72.943

[-20.68, 49.196, 52.987]

27.168