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:
[-2, 12, 55, -100, 82, 53, 13, 62, -93, -8, -25, -15, 92]

Ex Output:
[5.0, 33.5, -22.5, -9.0, 67.5, 33.0, 37.5, -15.5, -50.5, -16.5, -20.0, 38.5]


Ex Input:
[-68, -54, 55]

Ex Output:
[-61.0, 0.5]


Ex Input:
[50, -91, -100, -80, 87, 60]

Ex Output:

[-20.5, -95.5, -90.0, 3.5, 73.5]