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:
[58, -15]

Ex Output:
[21.5]


Ex Input:
[-79, -48, 58, -34, 17]

Ex Output:
[-63.5, 5.0, 12.0, -8.5]


Ex Input:
[-73, 90]

Ex Output:

[8.5]