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:
[-38, -61, -23, -94, -64, 18, -26, -96, -92, 96, -34, -80, -13, 45, -83]

Ex Output:
[-49.5, -42.0, -58.5, -79.0, -23.0, -4.0, -61.0, -94.0, 2.0, 31.0, -57.0, -46.5, 16.0, -19.0]


Ex Input:
[16, -51, -26, 81, 86, 96, 72, 44]

Ex Output:
[-17.5, -38.5, 27.5, 83.5, 91.0, 84.0, 58.0]


Ex Input:
[9, -71, -62, -39, 51, -31, 98, -77, 88, 59, -91]

Ex Output:

[-31.0, -66.5, -50.5, 6.0, 10.0, 33.5, 10.5, 5.5, 73.5, -16.0]