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:
[-77, -52, 64, 34, -9, 29, -91, 90, 8, -87, 34, 1, -8]

Ex Output:
[-64.5, 6.0, 49.0, 12.5, 10.0, -31.0, -0.5, 49.0, -39.5, -26.5, 17.5, -3.5]


Ex Input:
[23, -1, 90, 56, -44]

Ex Output:
[11.0, 44.5, 73.0, 6.0]


Ex Input:
[-1, 16, -63, 44, -39, -42, 82, -7, 58, -5, -41]

Ex Output:

[7.5, -23.5, -9.5, 2.5, -40.5, 20.0, 37.5, 25.5, 26.5, -23.0]