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:
[-49, -91, -7]

Ex Output:
[-70.0, -49.0]


Ex Input:
[-42, -27, -37, -63, 89, -61, -68]

Ex Output:
[-34.5, -32.0, -50.0, 13.0, 14.0, -64.5]


Ex Input:
[19, -97]

Ex Output:

[-39.0]