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:
[-91, 59, -52, 34, 5, 83, 49, -1, 27]

Ex Output:
[-16.0, 3.5, -9.0, 19.5, 44.0, 66.0, 24.0, 13.0]


Ex Input:
[-80, -100, -83, -56, -16, 87]

Ex Output:
[-90.0, -91.5, -69.5, -36.0, 35.5]


Ex Input:
[79, -73, 20, -82, 64, -73, -54, -73, -52, 57, 10]

Ex Output:

[3.0, -26.5, -31.0, -9.0, -4.5, -63.5, -63.5, -62.5, 2.5, 33.5]