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:
[27, -75, 71, -18, -67, -62, 95, 3, 10]

Ex Output:
[-24.0, -2.0, 26.5, -42.5, -64.5, 16.5, 49.0, 6.5]


Ex Input:
[74, -35, -92, -40, 97]

Ex Output:
[19.5, -63.5, -66.0, 28.5]


Ex Input:
[90, -70, -38, 68, 55, -49, -96, 0, 61]

Ex Output:

[10.0, -54.0, 15.0, 61.5, 3.0, -72.5, -48.0, 30.5]