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].

[51, 93, 57, -21, 85, 29, -55, 84, -37]
Output:
[72.0, 75.0, 18.0, 32.0, 57.0, -13.0, 14.5, 23.5]