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:
[-5, -12, 63, 46, -38, -6, -77, 21, 22, 93, 95, -97, 24]

Ex Output:
[-8.5, 25.5, 54.5, 4.0, -22.0, -41.5, -28.0, 21.5, 57.5, 94.0, -1.0, -36.5]


Ex Input:
[-48, -86, 13, 21, 39, -52, 70, 6, 66, 58, -3, 88, -64]

Ex Output:
[-67.0, -36.5, 17.0, 30.0, -6.5, 9.0, 38.0, 36.0, 62.0, 27.5, 42.5, 12.0]


Ex Input:
[57, -18, 0]

Ex Output:

[19.5, -9.0]