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: [-78, -89, -72, 90, -85, -78, -35]
Example Output: [-83.5, -80.5, 9.0, 2.5, -81.5, -56.5]

Example Input: [58, 76, 12, -55, 74, 15, -81]
Example Output: [67.0, 44.0, -21.5, 9.5, 44.5, -33.0]

Example Input: [-19, 12, 27, 99]
Example Output:
[-3.5, 19.5, 63.0]