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:
[1, -100, 41, -66, -18, -91, -1, -82, -99, 26, 27, -43, 40]

Ex Output:
[-49.5, -29.5, -12.5, -42.0, -54.5, -46.0, -41.5, -90.5, -36.5, 26.5, -8.0, -1.5]


Ex Input:
[92, -48]

Ex Output:
[22.0]


Ex Input:
[31, 42, -94, -43]

Ex Output:

[36.5, -26.0, -68.5]