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:
[20, -17, 41, -60, 2, 64, 36, 16, -43]

Ex Output:
[1.5, 12.0, -9.5, -29.0, 33.0, 50.0, 26.0, -13.5]


Ex Input:
[-60, 14, 11, 76]

Ex Output:
[-23.0, 12.5, 43.5]


Ex Input:
[-66, 72, -15, 38, -15, 4, -26]

Ex Output:

[3.0, 28.5, 11.5, 11.5, -5.5, -11.0]