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, -65, -77]
Example Output: [-12.5, -71.0]

Example Input: [-17, -67, -20, -30, 91, 51, -35, -90, 6, 93, -32, -97, 98, -11]
Example Output: [-42.0, -43.5, -25.0, 30.5, 71.0, 8.0, -62.5, -42.0, 49.5, 30.5, -64.5, 0.5, 43.5]

Example Input: [-27, -64]
Example Output:
[-45.5]