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.

[142.225, 243.809, -41.935, 96.795, -99.067, 222.292, 113.486, 143.726]
102.666

[185.594, 89.215, 19.941, 23.299, 47.251]
73.06

[46.452, 143.923, -52.893, 205.541, -89.445, 243.088, -11.647, 29.934, 70.663]

65.068