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: [-74, -2]
Example Output: [-38.0]

Example Input: [-71, -61, -75, 65, -16, -56, 58, -39, 19, 55, -66, -24]
Example Output: [-66.0, -68.0, -5.0, 24.5, -36.0, 1.0, 9.5, -10.0, 37.0, -5.5, -45.0]

Example Input: [55, -46, 64, -40]
Example Output:
[4.5, 9.0, 12.0]