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:
[44, -69, 2, -20, -20]

Ex Output:
[-12.5, -33.5, -9.0, -20.0]


Ex Input:
[-77, 76, 21, 100, 19]

Ex Output:
[-0.5, 48.5, 60.5, 59.5]


Ex Input:
[66, 9, -56, -29, -94, 69, -42, 15, -80, 84, 90, -24, -51, 84, 57]

Ex Output:

[37.5, -23.5, -42.5, -61.5, -12.5, 13.5, -13.5, -32.5, 2.0, 87.0, 33.0, -37.5, 16.5, 70.5]