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: [15, -78, -76, 35, 42, 83]
Example Output: [-31.5, -77.0, -20.5, 38.5, 62.5]

Example Input: [-39, -78, -10, -56, 67, 4, 97, 31]
Example Output: [-58.5, -44.0, -33.0, 5.5, 35.5, 50.5, 64.0]

Example Input: [-5, -27, -14, 10, 92, 78, -23, -61, 17, 89]
Example Output:
[-16.0, -20.5, -2.0, 51.0, 85.0, 27.5, -42.0, -22.0, 53.0]