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:
[-10, -49, -49, 14, 92, 63, -10, 73]

Ex Output:
[-29.5, -49.0, -17.5, 53.0, 77.5, 26.5, 31.5]


Ex Input:
[-34, 7, -83, 25, -31, 7]

Ex Output:
[-13.5, -38.0, -29.0, -3.0, -12.0]


Ex Input:
[-50, 52, -17, 63, -40, -15]

Ex Output:

[1.0, 17.5, 23.0, 11.5, -27.5]