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:
[-56, 32, -54]

Ex Output:
[-12.0, -11.0]


Ex Input:
[-29, 30, -85, 70, 5, -41]

Ex Output:
[0.5, -27.5, -7.5, 37.5, -18.0]


Ex Input:
[-15, 8]

Ex Output:

[-3.5]