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:
[81, -51, 1, -76, 11, 93, -3, 40, -15, -37, -20, -34, -85, -64, -34]

Ex Output:
[15.0, -25.0, -37.5, -32.5, 52.0, 45.0, 18.5, 12.5, -26.0, -28.5, -27.0, -59.5, -74.5, -49.0]


Ex Input:
[39, 12, 16]

Ex Output:

[25.5, 14.0]