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:
[55, -46, 64, -40]

Ex Output:
[4.5, 9.0, 12.0]


Ex Input:
[58, -15]

Ex Output:
[21.5]


Ex Input:
[26, 85, 25, 45, 100, -11, -32, -64, -23, -97]

Ex Output:

[55.5, 55.0, 35.0, 72.5, 44.5, -21.5, -48.0, -43.5, -60.0]