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:
[-21, 92, -76, 59, 41, -99, -5, 35, 92, 66, -50]

Ex Output:
[35.5, 8.0, -8.5, 50.0, -29.0, -52.0, 15.0, 63.5, 79.0, 8.0]


Ex Input:
[83, -87, 28, 17, 96, 39, -82]

Ex Output:
[-2.0, -29.5, 22.5, 56.5, 67.5, -21.5]


Ex Input:
[-42, -7, 85]

Ex Output:

[-24.5, 39.0]