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: [70, 22, 42, -61, -38, 33, -70]
Example Output: [46.0, 32.0, -9.5, -49.5, -2.5, -18.5]

Example Input: [72, -90, -99, -88, -87, -26, -40, -45, 69, 32, 57, 21, -67]
Example Output: [-9.0, -94.5, -93.5, -87.5, -56.5, -33.0, -42.5, 12.0, 50.5, 44.5, 39.0, -23.0]

Example Input: [-71, -31]
Example Output:
[-51.0]