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].

[-99, -62, -46, -87, -99, -49, -24, -26, -22, 61, -48, -25, -59, -51, -85]
[-80.5, -54.0, -66.5, -93.0, -74.0, -36.5, -25.0, -24.0, 19.5, 6.5, -36.5, -42.0, -55.0, -68.0]

[-42, -76]
[-59.0]

[23, -39, -61, -93, -51, 29, -34, -66]

[-8.0, -50.0, -77.0, -72.0, -11.0, -2.5, -50.0]