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:
[-1, -95, 61, -8, 6, 98, 96, -32, 66, 44, -23, -90]

Ex Output:
[-48.0, -17.0, 26.5, -1.0, 52.0, 97.0, 32.0, 17.0, 55.0, 10.5, -56.5]


Ex Input:
[-49, -91, -7]

Ex Output:
[-70.0, -49.0]


Ex Input:
[58, 86, -40, -21]

Ex Output:

[72.0, 23.0, -30.5]