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, -27, -35, -14, -48, 55, 42, 68, -12, -85, 82, -30, 22]

Ex Output:
[-11.0, -31.0, -24.5, -31.0, 3.5, 48.5, 55.0, 28.0, -48.5, -1.5, 26.0, -4.0]


Ex Input:
[33, -44]

Ex Output:
[-5.5]


Ex Input:
[54, -52, -29, 97, -1, 20, 82, 56, 3]

Ex Output:

[1.0, -40.5, 34.0, 48.0, 9.5, 51.0, 69.0, 29.5]