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:
[-45, -84, 35, 40]

Ex Output:
[-64.5, -24.5, 37.5]


Ex Input:
[38, -15, -76]

Ex Output:
[11.5, -45.5]


Ex Input:
[-45, 86, -36, 52, -49, -92, 56, -10, -97, -80, -84]

Ex Output:

[20.5, 25.0, 8.0, 1.5, -70.5, -18.0, 23.0, -53.5, -88.5, -82.0]