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, -76, 34, -35, 27, 74]
Example Output: [-21.5, -21.0, -0.5, -4.0, 50.5]

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: [83, -90, -68, -70, 49, 30, 17, -85, 88, 91, -92, 59, 89, -100, -83]
Example Output:
[-3.5, -79.0, -69.0, -10.5, 39.5, 23.5, -34.0, 1.5, 89.5, -0.5, -16.5, 74.0, -5.5, -91.5]