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: [20, 17, 12, -4, 33, -71, 17, -43, 72, -53, 80]
Example Output: [18.5, 14.5, 4.0, 14.5, -19.0, -27.0, -13.0, 14.5, 9.5, 13.5]

Example Input: [-70, -94]
Example Output: [-82.0]

Example Input: [52, -84, 38, -74, -84, 79, -30, 11, -49]
Example Output:
[-16.0, -23.0, -18.0, -79.0, -2.5, 24.5, -9.5, -19.0]