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:
[83, -11, 38]

Ex Output:
[36.0, 13.5]


Ex Input:
[79, -21, 98, 57, -90, 11, 45, -2, 6, -34]

Ex Output:
[29.0, 38.5, 77.5, -16.5, -39.5, 28.0, 21.5, 2.0, -14.0]


Ex Input:
[90, -77, 18, 15, 75, 5, 49]

Ex Output:

[6.5, -29.5, 16.5, 45.0, 40.0, 27.0]