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: [40, 34, -39]
Example Output: [37.0, -2.5]

Example Input: [91, 4, -53, 2, 79, -22, -71]
Example Output: [47.5, -24.5, -25.5, 40.5, 28.5, -46.5]

Example Input: [52, -27, -81, 89, 92, -8, -12, -100]
Example Output:
[12.5, -54.0, 4.0, 90.5, 42.0, -10.0, -56.0]