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:
[37, -48, 49]

Ex Output:
[-5.5, 0.5]


Ex Input:
[82, -37, 81]

Ex Output:
[22.5, 22.0]


Ex Input:
[34, 11, -25, 42, -3, 70, 28, -22, -8, 85, 80]

Ex Output:

[22.5, -7.0, 8.5, 19.5, 33.5, 49.0, 3.0, -15.0, 38.5, 82.5]