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, 12, 53, 49, 2, -54, -28, 8, -77, 27, -33]

Ex Output:
[-4.5, 32.5, 51.0, 25.5, -26.0, -41.0, -10.0, -34.5, -25.0, -3.0]


Ex Input:
[-29, -99, 93, 44, 8, -55, 48, 2, 22, 45]

Ex Output:
[-64.0, -3.0, 68.5, 26.0, -23.5, -3.5, 25.0, 12.0, 33.5]


Ex Input:
[7, 25, -87, 10, -94, 59, 75, -52, -11, -54]

Ex Output:

[16.0, -31.0, -38.5, -42.0, -17.5, 67.0, 11.5, -31.5, -32.5]