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:
[68, -66]

Ex Output:
[1.0]


Ex Input:
[-59, 35, 54, 98, 61, -21, 64, 91, -17, -70]

Ex Output:
[-12.0, 44.5, 76.0, 79.5, 20.0, 21.5, 77.5, 37.0, -43.5]


Ex Input:
[-15, 61, 42, -45, -28, -88, 65, 61, -21, -71]

Ex Output:

[23.0, 51.5, -1.5, -36.5, -58.0, -11.5, 63.0, 20.0, -46.0]