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.

[-94.068, -52.758, 53.31, -5.178, -20.667, 100.51, 100.973, 168.318, 54.245, 210.951]
51.564

[-53.388, 31.309, 19.079, -16.926, 242.421, 210.599]
72.182

[67.255, -86.742, 213.212, 166.01, 63.505, 56.78, -11.841]

66.883