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:
[86, -66, -60]

Ex Output:
[10.0, -63.0]


Ex Input:
[27, -78, -59, -24, 69, -13, 27, 48, -2, -82, 23, 13, 19, 7]

Ex Output:
[-25.5, -68.5, -41.5, 22.5, 28.0, 7.0, 37.5, 23.0, -42.0, -29.5, 18.0, 16.0, 13.0]


Ex Input:
[-51, 54, -94, -95, -61, 19, -76, 86]

Ex Output:

[1.5, -20.0, -94.5, -78.0, -21.0, -28.5, 5.0]