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: [-36, 17, -25, -21, 45, 34, -39, 21, 71]
Example Output: [-9.5, -4.0, -23.0, 12.0, 39.5, -2.5, -9.0, 46.0]

Example Input: [-89, 83, 0, -53]
Example Output: [-3.0, 41.5, -26.5]

Example Input: [-61, 40, 90, 28]
Example Output:
[-10.5, 65.0, 59.0]