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:
[99, -28, -18, -89, -14, -80, -54, -84, -82]

Ex Output:
[35.5, -23.0, -53.5, -51.5, -47.0, -67.0, -69.0, -83.0]


Ex Input:
[75, 87, -2, 42, -20, -50, 51]

Ex Output:
[81.0, 42.5, 20.0, 11.0, -35.0, 0.5]


Ex Input:
[89, -50, 77, 2, 89, -99, 22, -15, -56]

Ex Output:

[19.5, 13.5, 39.5, 45.5, -5.0, -38.5, 3.5, -35.5]