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.

[213.149, 184.894, -93.544, 195.043, 78.738, 229.09, 220.609, 80.079, 7.498]
123.951

[41.081, 166.314, -14.556, -84.648, -8.286]
19.981

[233.962, 4.931, -53.699, 212.744, 50.622, 179.646, 115.708, -94.893, 116.1, -81.4]

68.372