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:
[87, 68, 44, -69, -43]

Ex Output:
[77.5, 56.0, -12.5, -56.0]


Ex Input:
[61, -99, -96]

Ex Output:
[-19.0, -97.5]


Ex Input:
[59, -94, 96, -92, -17, -21, 50, 87]

Ex Output:

[-17.5, 1.0, 2.0, -54.5, -19.0, 14.5, 68.5]