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:
[-36, 17, -25, -21, 45, 34, -39, 21, 71]

Ex Output:
[-9.5, -4.0, -23.0, 12.0, 39.5, -2.5, -9.0, 46.0]


Ex Input:
[-88, 61, -53, 61, 4, 56, 15]

Ex Output:

[-13.5, 4.0, 4.0, 32.5, 30.0, 35.5]