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:
[36, -11, 53, -4, 26, -25, 45, -41]

Ex Output:
[12.5, 21.0, 24.5, 11.0, 0.5, 10.0, 2.0]


Ex Input:
[86, -66, -60]

Ex Output:
[10.0, -63.0]


Ex Input:
[-31, 39, -47]

Ex Output:

[4.0, -4.0]