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:
[102.524, 88.129, 196.972]

Ex Output:
129.208


Ex Input:
[109.74, 169.0, 195.864, -1.043, 51.968, -56.564, 214.711, -78.61, 212.459, 228.74]

Ex Output:
104.626


Ex Input:
[41.646, -94.243, 205.813, 139.618]

Ex Output:

73.208