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: [-100, -17, -69, 0, 35, -39, -34, -70, 21, 55, -74, -63]
Example Output: [-58.5, -43.0, -34.5, 17.5, -2.0, -36.5, -52.0, -24.5, 38.0, -9.5, -68.5]

Example Input: [-67, -96, -7, 11]
Example Output: [-81.5, -51.5, 2.0]

Example Input: [-6, -30, -26, -55, -86, 72, 29, 68, 56]
Example Output:
[-18.0, -28.0, -40.5, -70.5, -7.0, 50.5, 48.5, 62.0]