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: [57, 81, -99]
Example Output: [69.0, -9.0]

Example Input: [97, -97, 10]
Example Output: [0.0, -43.5]

Example Input: [-43, -82, -91, -98, 36, 23, -98, 70, 51, -92]
Example Output:
[-62.5, -86.5, -94.5, -31.0, 29.5, -37.5, -14.0, 60.5, -20.5]