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].

Example Input: [-81, -11, -100, 66, 29, 28, 31, -36]
Example Output: [-46.0, -55.5, -17.0, 47.5, 28.5, 29.5, -2.5]

Example Input: [-22, -85]
Example Output: [-53.5]

Example Input: [39, 2, -88, -15]
Example Output:
[20.5, -43.0, -51.5]

