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].

[58, -99]
[-20.5]

[-41, -35]
[-38.0]

[-73, 32, -66, 43, -60]

[-20.5, -17.0, -11.5, -8.5]