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:
[82, -37, 81]

Ex Output:
[22.5, 22.0]


Ex Input:
[97, -97, 10]

Ex Output:
[0.0, -43.5]


Ex Input:
[-11, -60, 36, -19, -74, -80, 67]

Ex Output:

[-35.5, -12.0, 8.5, -46.5, -77.0, -6.5]