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:
[-26, -40, -22, -65, -61, 16, 26, 51, -24]

Ex Output:
[-33.0, -31.0, -43.5, -63.0, -22.5, 21.0, 38.5, 13.5]


Ex Input:
[-68, -54, 55]

Ex Output:
[-61.0, 0.5]


Ex Input:
[24, 74]

Ex Output:

[49.0]