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:
[18, -97, -66, -82, -74, 44, 15, 1, 79, -3]

Ex Output:
[-39.5, -81.5, -74.0, -78.0, -15.0, 29.5, 8.0, 40.0, 38.0]


Ex Input:
[75, 67, 18, -15, -51, -80, -73]

Ex Output:
[71.0, 42.5, 1.5, -33.0, -65.5, -76.5]


Ex Input:
[-87, -30, -100]

Ex Output:

[-58.5, -65.0]