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, -57, 62, 14, -89, 19, 56, -90, 32, 21, -2, -9]

Ex Output:
[-7.5, 2.5, 38.0, -37.5, -35.0, 37.5, -17.0, -29.0, 26.5, 9.5, -5.5]


Ex Input:
[41, -89, 75, -25, 95, -19, 62, -66, -87, -51, -1, 94]

Ex Output:
[-24.0, -7.0, 25.0, 35.0, 38.0, 21.5, -2.0, -76.5, -69.0, -26.0, 46.5]


Ex Input:
[9, -9, 40]

Ex Output:

[0.0, 15.5]