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:
[-31, 21, -23]

Ex Output:
[-5.0, -1.0]


Ex Input:
[22, -56]

Ex Output:
[-17.0]


Ex Input:
[65, 92, -48, -32, -1, -9, -75, -50, -36, -50, 18, 84, 58, -71, -16]

Ex Output:

[78.5, 22.0, -40.0, -16.5, -5.0, -42.0, -62.5, -43.0, -43.0, -16.0, 51.0, 71.0, -6.5, -43.5]