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:
[-53, 31, 52]

Ex Output:
[-11.0, 41.5]


Ex Input:
[94, 36, -77, -44, -66, -1, 63, 28, 84, 91, 4, -43, 39, -81, -73]

Ex Output:
[65.0, -20.5, -60.5, -55.0, -33.5, 31.0, 45.5, 56.0, 87.5, 47.5, -19.5, -2.0, -21.0, -77.0]


Ex Input:
[57, -66, -67, -40, 33, -99, -62]

Ex Output:

[-4.5, -66.5, -53.5, -3.5, -33.0, -80.5]