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:
[-38, -61, -23, -94, -64, 18, -26, -96, -92, 96, -34, -80, -13, 45, -83]

Ex Output:
[-49.5, -42.0, -58.5, -79.0, -23.0, -4.0, -61.0, -94.0, 2.0, 31.0, -57.0, -46.5, 16.0, -19.0]


Ex Input:
[91, 3, -59, 63]

Ex Output:
[47.0, -28.0, 2.0]


Ex Input:
[-59, -23, 4, 73, 55, -99, 41, -8, 18]

Ex Output:

[-41.0, -9.5, 38.5, 64.0, -22.0, -29.0, 16.5, 5.0]