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:
[25, -2, -89, -18, 21, 27, -11, -40, 38, 92, 85, -51, -89, -44, -19]

Ex Output:
[11.5, -45.5, -53.5, 1.5, 24.0, 8.0, -25.5, -1.0, 65.0, 88.5, 17.0, -70.0, -66.5, -31.5]


Ex Input:
[95, -87, -48, 69, -76, -19, 97, 97, -50, -74, -87, 91, 12, -47, 45]

Ex Output:
[4.0, -67.5, 10.5, -3.5, -47.5, 39.0, 97.0, 23.5, -62.0, -80.5, 2.0, 51.5, -17.5, -1.0]


Ex Input:
[98, 92, -37, -71]

Ex Output:

[95.0, 27.5, -54.0]