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: [30, -51, 47]

SOLUTION: [-10.5, -2.0]

PROBLEM: [57, -42, -14, -48, -62, 7, -9]

SOLUTION: [7.5, -28.0, -31.0, -55.0, -27.5, -1.0]

PROBLEM: [48, 69, 7, 42, 46, -27, -58, 24, 95, 57]

SOLUTION:
[58.5, 38.0, 24.5, 44.0, 9.5, -42.5, -17.0, 59.5, 76.0]