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:
[-57, -27, -20, 4, -82, 58, -39, 92, 64, -68, -21]

Ex Output:
[-42.0, -23.5, -8.0, -39.0, -12.0, 9.5, 26.5, 78.0, -2.0, -44.5]


Ex Input:
[-7, 95, -59, -100, -98, -7, 50, 93, 59, -78, 31, -79]

Ex Output:
[44.0, 18.0, -79.5, -99.0, -52.5, 21.5, 71.5, 76.0, -9.5, -23.5, -24.0]


Ex Input:
[-34, -5, -7, -81, -73, -12, 44, 70, 12]

Ex Output:

[-19.5, -6.0, -44.0, -77.0, -42.5, 16.0, 57.0, 41.0]