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:
[33, 66, 9, -63, -67, 30, -47, -2, -26, -91]

Ex Output:
[49.5, 37.5, -27.0, -65.0, -18.5, -8.5, -24.5, -14.0, -58.5]


Ex Input:
[-13, 58, 24, 49, 97]

Ex Output:
[22.5, 41.0, 36.5, 73.0]


Ex Input:
[-54, 99, -16, -25, 50, -65, 49, -62, -26]

Ex Output:

[22.5, 41.5, -20.5, 12.5, -7.5, -8.0, -6.5, -44.0]