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: [40, 77, 36, 50, 36, 89, -13, 75, -57, -13, 15, 42, 72, 21]
Example Output: [58.5, 56.5, 43.0, 43.0, 62.5, 38.0, 31.0, 9.0, -35.0, 1.0, 28.5, 57.0, 46.5]

Example Input: [55, -33, 9, 23, -18, -6, -90, -6, -78]
Example Output: [11.0, -12.0, 16.0, 2.5, -12.0, -48.0, -48.0, -42.0]

Example Input: [87, 22, 13, 9, -28, -51, -58, -11, 40, 60, 25]
Example Output:
[54.5, 17.5, 11.0, -9.5, -39.5, -54.5, -34.5, 14.5, 50.0, 42.5]