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:
[15, -78, -76, 35, 42, 83]

Ex Output:
[-31.5, -77.0, -20.5, 38.5, 62.5]


Ex Input:
[-5, -54, -100, -12, -64, 96, -48]

Ex Output:
[-29.5, -77.0, -56.0, -38.0, 16.0, 24.0]


Ex Input:
[-81, 27, -53]

Ex Output:

[-27.0, -13.0]