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.

[216.883, -37.346, 67.498, 41.686, 140.857, 195.57]
104.191

[157.631, 106.369, -25.319, 160.78, -87.597, 222.819, -60.99, 36.758, -3.695]
56.306

[-7.057, 122.729, -78.932, 52.502, 191.819, 80.994, 29.505, -10.501]

47.632