In this task you are given a list of numbers and you need to find the average of each two consecutive values. The average of two numbers a and b is calculated as: (a + b) /2. The output should be a list of the averages of each two consecutive values. A list is presented with two brackets and comma-separated values, like: [1,2,3].

Ex Input:
[-80, -84]

Ex Output:
[-82.0]


Ex Input:
[4, 56, 13, 30, 42, -23, 54, 75, -46, -34, 44, -47, 50, -16]

Ex Output:
[30.0, 34.5, 21.5, 36.0, 9.5, 15.5, 64.5, 14.5, -40.0, 5.0, -1.5, 1.5, 17.0]


Ex Input:
[97, -44, 31, -72]

Ex Output:

[26.5, -6.5, -20.5]