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:
[-42, -76]

Ex Output:
[-59.0]


Ex Input:
[-74, -74, 64, -88, 59, 99, 27, -18, -49]

Ex Output:
[-74.0, -5.0, -12.0, -14.5, 79.0, 63.0, 4.5, -33.5]


Ex Input:
[55, 16, 81, -18, -34, 87, -21, 58, 56, 19]

Ex Output:

[35.5, 48.5, 31.5, -26.0, 26.5, 33.0, 18.5, 57.0, 37.5]