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: [33, 66, 9, -63, -67, 30, -47, -2, -26, -91]
Example Output: [49.5, 37.5, -27.0, -65.0, -18.5, -8.5, -24.5, -14.0, -58.5]

Example Input: [83, -58]
Example Output: [12.5]

Example Input: [74, -5, -98, 42]
Example Output:
[34.5, -51.5, -28.0]