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:
[-76, -3, -6, -74, 70, -26]

Ex Output:
[-39.5, -4.5, -40.0, -2.0, 22.0]


Ex Input:
[-40, 54]

Ex Output:
[7.0]


Ex Input:
[86, -68, 0, -87, 70, -64, 18, -77, 75, 2, -62, 4, 34, -52, 99]

Ex Output:

[9.0, -34.0, -43.5, -8.5, 3.0, -23.0, -29.5, -1.0, 38.5, -30.0, -29.0, 19.0, -9.0, 23.5]