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:
[-84, -19]

Ex Output:
[-51.5]


Ex Input:
[92, -24, -56, -81, 53, 60, 5, -82, -14, -26, -31, -83, 17]

Ex Output:
[34.0, -40.0, -68.5, -14.0, 56.5, 32.5, -38.5, -48.0, -20.0, -28.5, -57.0, -33.0]


Ex Input:
[20, 72, -85, 52, 29, -85, -7]

Ex Output:

[46.0, -6.5, -16.5, 40.5, -28.0, -46.0]