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:
[36, -61, 50, 72, 12, 9]

Ex Output:
[-12.5, -5.5, 61.0, 42.0, 10.5]


Ex Input:
[86, -66, -60]

Ex Output:
[10.0, -63.0]


Ex Input:
[-58, 42, 11, 49, -39, 1, 79, 5, -32, -100, 98, -72, -94]

Ex Output:

[-8.0, 26.5, 30.0, 5.0, -19.0, 40.0, 42.0, -13.5, -66.0, -1.0, 13.0, -83.0]