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].

Ex Input:
[-83, -69, -51, 12, 67, 99, 74, 77, -6, -81, -13, -70, -34, -8, 25]

Ex Output:
[-76.0, -60.0, -19.5, 39.5, 83.0, 86.5, 75.5, 35.5, -43.5, -47.0, -41.5, -52.0, -21.0, 8.5]


Ex Input:
[27, 32, -92]

Ex Output:
[29.5, -30.0]


Ex Input:
[-38, 27, 96, 92, -29, 81, -1, 37, 40, 19, -44, -56]

Ex Output:

[-5.5, 61.5, 94.0, 31.5, 26.0, 40.0, 18.0, 38.5, 29.5, -12.5, -50.0]