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:
[-71, 91, 51, -78, -87, -87, 71]

Ex Output:
[10.0, 71.0, -13.5, -82.5, -87.0, -8.0]


Ex Input:
[60, 88]

Ex Output:
[74.0]


Ex Input:
[20, -12, -77, -50, -73, 69, 68, 85, -16, 99]

Ex Output:

[4.0, -44.5, -63.5, -61.5, -2.0, 68.5, 76.5, 34.5, 41.5]