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:
[-17, -67, -20, -30, 91, 51, -35, -90, 6, 93, -32, -97, 98, -11]

Ex Output:
[-42.0, -43.5, -25.0, 30.5, 71.0, 8.0, -62.5, -42.0, 49.5, 30.5, -64.5, 0.5, 43.5]


Ex Input:
[-39, 16, -88, -73, 52, -75, -23, -37, 21]

Ex Output:
[-11.5, -36.0, -80.5, -10.5, -11.5, -49.0, -30.0, -8.0]


Ex Input:
[56, 2, -68, 83, 100, -38, 44, -57, 35, -30]

Ex Output:

[29.0, -33.0, 7.5, 91.5, 31.0, 3.0, -6.5, -11.0, 2.5]


