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:
[22, -56]

Ex Output:
[-17.0]


Ex Input:
[60, 88]

Ex Output:
[74.0]


Ex Input:
[-60, -100, -19, 36, 30, -62, -48, -27, 12]

Ex Output:

[-80.0, -59.5, 8.5, 33.0, -16.0, -55.0, -37.5, -7.5]