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.

Ex Input:
[132.047, -2.027, 97.041, -49.199, 29.646, 3.384, 104.121, 237.857, 5.555]

Ex Output:
62.047


Ex Input:
[132.779, 126.164, 97.743, -59.174, -55.441]

Ex Output:
48.414


Ex Input:
[189.754, -95.109, 228.258, 232.093, 110.498, 68.628, 152.154]

Ex Output:

126.611