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, -74, -7, 59, -76, -57, -99, 65]

Ex Output:
[-46.0, -40.5, 26.0, -8.5, -66.5, -78.0, -17.0]


Ex Input:
[53, -14, 74, -1, -98, 31, -26, 21, 41, -87, 14, 46]

Ex Output:
[19.5, 30.0, 36.5, -49.5, -33.5, 2.5, -2.5, 31.0, -23.0, -36.5, 30.0]


Ex Input:
[-72, 93, -24]

Ex Output:

[10.5, 34.5]