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: [20, 17, 12, -4, 33, -71, 17, -43, 72, -53, 80]
Example Output: [18.5, 14.5, 4.0, 14.5, -19.0, -27.0, -13.0, 14.5, 9.5, 13.5]

Example Input: [8, -8, 26, -88, 71, -9, -10, -93, -91, -72, -12]
Example Output: [0.0, 9.0, -31.0, -8.5, 31.0, -9.5, -51.5, -92.0, -81.5, -42.0]

Example Input: [48, 14, -43, 30, -53, 57, -59, 99, 56, -3, 34, -71, -29]
Example Output:
[31.0, -14.5, -6.5, -11.5, 2.0, -1.0, 20.0, 77.5, 26.5, 15.5, -18.5, -50.0]