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:
[-71, -61, -75, 65, -16, -56, 58, -39, 19, 55, -66, -24]

Ex Output:
[-66.0, -68.0, -5.0, 24.5, -36.0, 1.0, 9.5, -10.0, 37.0, -5.5, -45.0]


Ex Input:
[44, -69, 2, -20, -20]

Ex Output:
[-12.5, -33.5, -9.0, -20.0]


Ex Input:
[56, 57]

Ex Output:

[56.5]