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:
[83, 67, 5, -15]

Ex Output:
[75.0, 36.0, -5.0]


Ex Input:
[-56, 32, -54]

Ex Output:
[-12.0, -11.0]


Ex Input:
[91, -83, -3, 20, 59, -11, -47, 10, 8, 68, -76]

Ex Output:

[4.0, -43.0, 8.5, 39.5, 24.0, -29.0, -18.5, 9.0, 38.0, -4.0]


