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:
[28, -83, -37, -51]

Ex Output:
[-27.5, -60.0, -44.0]


Ex Input:
[-89, 95, -83, 98, -5, -89, -24]

Ex Output:
[3.0, 6.0, 7.5, 46.5, -47.0, -56.5]


Ex Input:
[57, -60, -48, -79, -93, -33, -98, -91, -2, -90, 20]

Ex Output:

[-1.5, -54.0, -63.5, -86.0, -63.0, -65.5, -94.5, -46.5, -46.0, -35.0]