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:
[-20.702, 4.455, 37.838, 102.751, 231.6, -23.075, 236.527, 227.109, 171.708, 46.239]

Ex Output:
101.445


Ex Input:
[102.553, 221.594, -69.406, 192.534, 139.703, -38.208, 228.963, 32.921]

Ex Output:
101.332


Ex Input:
[243.119, 198.975, 44.828, 192.078, 66.175, 169.375, 220.423, 45.768, 20.289, -56.022]

Ex Output:

114.501