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, -52, -63, 41]

Ex Output:
[19.5, -57.5, -11.0]


Ex Input:
[-5, -93, 84, -24, -72]

Ex Output:
[-49.0, -4.5, 30.0, -48.0]


Ex Input:
[50, -30, -75, 27, 50, -97, 53, 81, -86, 77, -55, -67, 34]

Ex Output:

[10.0, -52.5, -24.0, 38.5, -23.5, -22.0, 67.0, -2.5, -4.5, 11.0, -61.0, -16.5]