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:
[59, 57]

Ex Output:
[58.0]


Ex Input:
[16, 35, 54, -67, 0, -98, 43, -5, 30]

Ex Output:
[25.5, 44.5, -6.5, -33.5, -49.0, -27.5, 19.0, 12.5]


Ex Input:
[-1, -37, 69, 46, 94, 82, -48, 39, -50]

Ex Output:

[-19.0, 16.0, 57.5, 70.0, 88.0, 17.0, -4.5, -5.5]