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.

[157.423, -98.775, -67.748, 25.759, 24.697, 150.289, -68.457, 212.57, -9.355]
36.267

[117.913, 21.456, 98.401, -32.801, -20.798, 182.745, 201.277]
81.17

[64.98, -23.968, 107.113, -88.05, 48.489, 71.254, 103.289]

40.444