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:
[86, -66, -60]

Ex Output:
[10.0, -63.0]


Ex Input:
[-27, 83, -67, 51, -57, -18, -59, 85, -84, 68, 16, 61]

Ex Output:
[28.0, 8.0, -8.0, -3.0, -37.5, -38.5, 13.0, 0.5, -8.0, 42.0, 38.5]


Ex Input:
[-44, -39, 40, 29, 77, -2, -39, -99, 47, 78]

Ex Output:

[-41.5, 0.5, 34.5, 53.0, 37.5, -20.5, -69.0, -26.0, 62.5]