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:
[36, 29, -68, 61, 3, 6, -24, 58, 28, -86, -37, 32]

Ex Output:
[32.5, -19.5, -3.5, 32.0, 4.5, -9.0, 17.0, 43.0, -29.0, -61.5, -2.5]


Ex Input:
[63, 88, 81, 75, 33, 68, 67]

Ex Output:

[75.5, 84.5, 78.0, 54.0, 50.5, 67.5]