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:
[-84, -19]

Ex Output:
[-51.5]


Ex Input:
[-21, 12, 53, 49, 2, -54, -28, 8, -77, 27, -33]

Ex Output:
[-4.5, 32.5, 51.0, 25.5, -26.0, -41.0, -10.0, -34.5, -25.0, -3.0]


Ex Input:
[-22, 51, 50, 86, 24, -49]

Ex Output:

[14.5, 50.5, 68.0, 55.0, -12.5]