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:
[-40, 54]

Ex Output:
[7.0]


Ex Input:
[-5, -93, 84, -24, -72]

Ex Output:
[-49.0, -4.5, 30.0, -48.0]


Ex Input:
[90, 72, -80, -10, -71, 82, -2, 100]

Ex Output:

[81.0, -4.0, -45.0, -40.5, 5.5, 40.0, 49.0]