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:
[47, -74, 41, -15, 18, 83, -84, -76, -18, 97, -76, -88, -92, 0, -44]

Ex Output:
[-13.5, -16.5, 13.0, 1.5, 50.5, -0.5, -80.0, -47.0, 39.5, 10.5, -82.0, -90.0, -46.0, -22.0]


Ex Input:
[36, -53]

Ex Output:
[-8.5]


Ex Input:
[3, -84, 83, -67, -35, 10, -98, 21]

Ex Output:

[-40.5, -0.5, 8.0, -51.0, -12.5, -44.0, -38.5]