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: [-74, -74, 64, -88, 59, 99, 27, -18, -49]

SOLUTION: [-74.0, -5.0, -12.0, -14.5, 79.0, 63.0, 4.5, -33.5]

PROBLEM: [-100, -24, -65, 18, -73, -49, -83, 66, -54, -58]

SOLUTION:
[-62.0, -44.5, -23.5, -27.5, -61.0, -66.0, -8.5, 6.0, -56.0]