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:
[-40, 54]

Ex Output:
[7.0]


Ex Input:
[83, 68, 64, 59]

Ex Output:
[75.5, 66.0, 61.5]


Ex Input:
[23, -66, -94, -3, -60]

Ex Output:

[-21.5, -80.0, -48.5, -31.5]