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:
[82, -37, 81]

Ex Output:
[22.5, 22.0]


Ex Input:
[-2, -26, 60, 94, 36, -43, -53, 74, -93, 51, -46, 85, 23, 71]

Ex Output:
[-14.0, 17.0, 77.0, 65.0, -3.5, -48.0, 10.5, -9.5, -21.0, 2.5, 19.5, 54.0, 47.0]


Ex Input:
[19, -53, 23, -9, -80, 88, -14, 32, -87]

Ex Output:

[-17.0, -15.0, 7.0, -44.5, 4.0, 37.0, 9.0, -27.5]