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:
[-69, -35, 56, 64]

Ex Output:
[-52.0, 10.5, 60.0]


Ex Input:
[-18, -74, -7, 59, -76, -57, -99, 65]

Ex Output:
[-46.0, -40.5, 26.0, -8.5, -66.5, -78.0, -17.0]


Ex Input:
[77, -58, 60, -59, -6, 5, -14, 82, -39, 46, 47, -15, 56, 80, -68]

Ex Output:

[9.5, 1.0, 0.5, -32.5, -0.5, -4.5, 34.0, 21.5, 3.5, 46.5, 16.0, 20.5, 68.0, 6.0]