TASK DEFINITION: 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].
PROBLEM: [-99, -62, -46, -87, -99, -49, -24, -26, -22, 61, -48, -25, -59, -51, -85]

SOLUTION: [-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]

PROBLEM: [96, -100, -60, -70, 33, -23, 42, 80, 33, -32, -52, -14, -62, 11]

SOLUTION: [-2.0, -80.0, -65.0, -18.5, 5.0, 9.5, 61.0, 56.5, 0.5, -42.0, -33.0, -38.0, -25.5]

PROBLEM: [-76, 5, -16, 59, 7, -83, 85, 49, -23, 17, 51]

SOLUTION:
[-35.5, -5.5, 21.5, 33.0, -38.0, 1.0, 67.0, 13.0, -3.0, 34.0]