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: [25, -2, -89, -18, 21, 27, -11, -40, 38, 92, 85, -51, -89, -44, -19]

SOLUTION: [11.5, -45.5, -53.5, 1.5, 24.0, 8.0, -25.5, -1.0, 65.0, 88.5, 17.0, -70.0, -66.5, -31.5]

PROBLEM: [93, -20, -64, -4, -73, 78, -84, 84, -87]

SOLUTION: [36.5, -42.0, -34.0, -38.5, 2.5, -3.0, 0.0, -1.5]

PROBLEM: [-10, -97, -29, 56, 25, -80, 77, 49, -63, -100, -65, -82, -100, -33, -72]

SOLUTION:
[-53.5, -63.0, 13.5, 40.5, -27.5, -1.5, 63.0, -7.0, -81.5, -82.5, -73.5, -91.0, -66.5, -52.5]