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: [55, -33, 9, 23, -18, -6, -90, -6, -78]
Example Output: [11.0, -12.0, 16.0, 2.5, -12.0, -48.0, -48.0, -42.0]

Example Input: [-12, -2, 33, -26, 37, -82, -14, 56, -39, 57, 2]
Example Output: [-7.0, 15.5, 3.5, 5.5, -22.5, -48.0, 21.0, 8.5, 9.0, 29.5]

Example Input: [89, -29, -43, 99, -63, -80, -73, -50, -58]
Example Output:
[30.0, -36.0, 28.0, 18.0, -71.5, -76.5, -61.5, -54.0]