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:
[20, 75, 10, 74, -35, 64, -2]

Ex Output:
[47.5, 42.5, 42.0, 19.5, 14.5, 31.0]


Ex Input:
[20, 17, 12, -4, 33, -71, 17, -43, 72, -53, 80]

Ex Output:
[18.5, 14.5, 4.0, 14.5, -19.0, -27.0, -13.0, 14.5, 9.5, 13.5]


Ex Input:
[20, 56, -62, 97, 90, -19, 49, -13, -71, 77, 76, -41]

Ex Output:

[38.0, -3.0, 17.5, 93.5, 35.5, 15.0, 18.0, -42.0, 3.0, 76.5, 17.5]