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: [-71, -78, -84, 6, 99, 66, -90, -36, -77, -56, 19, -59, 71]

SOLUTION: [-74.5, -81.0, -39.0, 52.5, 82.5, -12.0, -63.0, -56.5, -66.5, -18.5, -20.0, 6.0]

PROBLEM: [7, -10, -55, 26, -43, 13, 16, -100, 57, 71, 98, -89, 35]

SOLUTION: [-1.5, -32.5, -14.5, -8.5, -15.0, 14.5, -42.0, -21.5, 64.0, 84.5, 4.5, -27.0]

PROBLEM: [43, 68, -87, -60, -65, -26, 60]

SOLUTION:
[55.5, -9.5, -73.5, -62.5, -45.5, 17.0]