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: [-37, 76, -35, 6, -72, 89, -100, -9, -81, 73, 90, -20]
Example Output: [19.5, 20.5, -14.5, -33.0, 8.5, -5.5, -54.5, -45.0, -4.0, 81.5, 35.0]

Example Input: [-64, -46, 21, -97, -86]
Example Output: [-55.0, -12.5, -38.0, -91.5]

Example Input: [67, -28, 81, 36, 34, -25, -29, 51, 85]
Example Output:
[19.5, 26.5, 58.5, 35.0, 4.5, -27.0, 11.0, 68.0]