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.

[95.472, 109.291, 245.955, 86.122, -90.639, 144.544, 31.063, 89.001, 40.671]
83.498

[116.268, 173.27, 228.827, 52.695, 66.445, -34.051, 152.137]
107.942

[86.49, 214.099, -90.546, 63.504, 109.644, 231.927, -7.661, -59.778, 17.036, 92.465]

65.718