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:
[-48, -86, 13, 21, 39, -52, 70, 6, 66, 58, -3, 88, -64]

Ex Output:
[-67.0, -36.5, 17.0, 30.0, -6.5, 9.0, 38.0, 36.0, 62.0, 27.5, 42.5, 12.0]


Ex Input:
[40, 77, 36, 50, 36, 89, -13, 75, -57, -13, 15, 42, 72, 21]

Ex Output:
[58.5, 56.5, 43.0, 43.0, 62.5, 38.0, 31.0, 9.0, -35.0, 1.0, 28.5, 57.0, 46.5]


Ex Input:
[-42, -33, 70, -64, 5, -22, -55, -60]

Ex Output:

[-37.5, 18.5, 3.0, -29.5, -8.5, -38.5, -57.5]