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.

[176.017, -45.57]
65.224

[226.287, 114.252, -53.47, 8.606, 234.708, -31.872, 163.615]
94.589

[161.751, 233.779, -33.533]

120.666