You will be given a definition of a task first, then some input of the task.
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].

[-29, 40, -56, 82, -16, -61, 83, 66]
Output:
[5.5, -8.0, 13.0, 33.0, -38.5, 11.0, 74.5]