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:
[42, -88, 79, -30, 60, 0, -35, -9, -72, 97, -57, -41, -43]

Ex Output:
[-23.0, -4.5, 24.5, 15.0, 30.0, -17.5, -22.0, -40.5, 12.5, 20.0, -49.0, -42.0]


Ex Input:
[-90, -60, 60, 49, 98, -41, -91, -46, -80]

Ex Output:

[-75.0, 0.0, 54.5, 73.5, 28.5, -66.0, -68.5, -63.0]