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: [20, -40, -63, 94, -53, -6, 18, 47, -18, -20, -94, 71, 17, 26]

SOLUTION: [-10.0, -51.5, 15.5, 20.5, -29.5, 6.0, 32.5, 14.5, -19.0, -57.0, -11.5, 44.0, 21.5]

PROBLEM: [47, -34, 89, -12, -79, -52, -80, 55, 75, -8, 72, -38, 87, 1, -78]

SOLUTION: [6.5, 27.5, 38.5, -45.5, -65.5, -66.0, -12.5, 65.0, 33.5, 32.0, 17.0, 24.5, 44.0, -38.5]

PROBLEM: [30, 76, -19, 73, 59, 33, 84, 44, -84, -30, -30, -15]

SOLUTION:
[53.0, 28.5, 27.0, 66.0, 46.0, 58.5, 64.0, -20.0, -57.0, -30.0, -22.5]