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:
[74, -35, -92, -40, 97]

Ex Output:
[19.5, -63.5, -66.0, 28.5]


Ex Input:
[41, -66, -51, -81, 57, -30, 7]

Ex Output:
[-12.5, -58.5, -66.0, -12.0, 13.5, -11.5]


Ex Input:
[-70, 81, 79, 8, 35]

Ex Output:

[5.5, 80.0, 43.5, 21.5]