instruction:
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.
question:
[169.421, 88.16]
answer:
128.791


question:
[223.951, 2.518, 140.336, -38.799, 217.497, 212.153, 21.874]
answer:
111.361


question:
[15.995, 115.135, 231.829, 145.814]
answer:

127.193