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.

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

[-40.509, 201.39]
80.44

[135.958, 106.295, 138.576, 159.672, -37.241, 67.379, 58.779, 71.203, 191.768, -30.14]

86.225