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:
[-61, -4, 59, 97, 77, 15, 50, -66, 99, 90, -77, 53]

Ex Output:
[-32.5, 27.5, 78.0, 87.0, 46.0, 32.5, -8.0, 16.5, 94.5, 6.5, -12.0]


Ex Input:
[-84, -19]

Ex Output:
[-51.5]


Ex Input:
[11, 76, 37, 67, -40, -12, -75, -22, 72, -41, 79, 3]

Ex Output:

[43.5, 56.5, 52.0, 13.5, -26.0, -43.5, -48.5, 25.0, 15.5, 19.0, 41.0]