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:
[93, -20, -64, -4, -73, 78, -84, 84, -87]

Ex Output:
[36.5, -42.0, -34.0, -38.5, 2.5, -3.0, 0.0, -1.5]


Ex Input:
[-14, -93, 6, -75, 34, 96, 8, -65, -91]

Ex Output:
[-53.5, -43.5, -34.5, -20.5, 65.0, 52.0, -28.5, -78.0]


Ex Input:
[83, -90, 4, -75, -6, 18, -3, -57, 12, -28, 13, 68, -81]

Ex Output:

[-3.5, -43.0, -35.5, -40.5, 6.0, 7.5, -30.0, -22.5, -8.0, -7.5, 40.5, -6.5]