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:
[33, -44]

Ex Output:
[-5.5]


Ex Input:
[34, 32, -21, -70, 38, 7, -25]

Ex Output:
[33.0, 5.5, -45.5, -16.0, 22.5, -9.0]


Ex Input:
[-72, -27, 13, -54, -40, -15, -30, -15, -71, -89]

Ex Output:

[-49.5, -7.0, -20.5, -47.0, -27.5, -22.5, -22.5, -43.0, -80.0]