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: [81, 73]
Example Output: [77.0]

Example Input: [20, 57, 16, -66, -30, -89, 64, -22, 7, -36, -19, -71]
Example Output: [38.5, 36.5, -25.0, -48.0, -59.5, -12.5, 21.0, -7.5, -14.5, -27.5, -45.0]

Example Input: [57, 68, -96, -57, -93, 97]
Example Output:
[62.5, -14.0, -76.5, -75.0, 2.0]