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.

[231.352, -24.17]
103.591

[-84.771, 60.727, 165.566, 27.782, 159.929, 167.451, -64.15]
61.791

[107.428, -85.412, 100.879, 236.827, 242.768, 84.249]

114.456