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:
[75, 87, -2, 42, -20, -50, 51]

Ex Output:
[81.0, 42.5, 20.0, 11.0, -35.0, 0.5]


Ex Input:
[92, -24, -56, -81, 53, 60, 5, -82, -14, -26, -31, -83, 17]

Ex Output:
[34.0, -40.0, -68.5, -14.0, 56.5, 32.5, -38.5, -48.0, -20.0, -28.5, -57.0, -33.0]


Ex Input:
[18, 49, -31, -22, -68, 39, 9, -90]

Ex Output:

[33.5, 9.0, -26.5, -45.0, -14.5, 24.0, -40.5]