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:
[-39, 16, -88, -73, 52, -75, -23, -37, 21]

Ex Output:
[-11.5, -36.0, -80.5, -10.5, -11.5, -49.0, -30.0, -8.0]


Ex Input:
[-43, -18, 79, -62, -93, 23, -48, 21, 44, 67, 82]

Ex Output:
[-30.5, 30.5, 8.5, -77.5, -35.0, -12.5, -13.5, 32.5, 55.5, 74.5]


Ex Input:
[1, 29, 66, 5, 70, 25, -12]

Ex Output:

[15.0, 47.5, 35.5, 37.5, 47.5, 6.5]