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: [-31, 21, -23]
Example Output: [-5.0, -1.0]

Example Input: [53, -70, 12, 14, -11, -69, 85]
Example Output: [-8.5, -29.0, 13.0, 1.5, -40.0, 8.0]

Example Input: [21, -50, -30, -29, -21, -15, 10, 82]
Example Output:
[-14.5, -40.0, -29.5, -25.0, -18.0, -2.5, 46.0]