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:
[-31, 47, -12, 69, 3, 15, 55, 87, 81, 75, -77, -59, -28]

Ex Output:
[8.0, 17.5, 28.5, 36.0, 9.0, 35.0, 71.0, 84.0, 78.0, -1.0, -68.0, -43.5]


Ex Input:
[-34, 7, -83, 25, -31, 7]

Ex Output:
[-13.5, -38.0, -29.0, -3.0, -12.0]


Ex Input:
[96, 9, -11, -96, -53, -77, 87, 15, 17, 10, -92]

Ex Output:

[52.5, -1.0, -53.5, -74.5, -65.0, 5.0, 51.0, 16.0, 13.5, -41.0]