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: [-27, -64]

SOLUTION: [-45.5]

PROBLEM: [-94, 9, 98, -36, 85, 33, -53]

SOLUTION: [-42.5, 53.5, 31.0, 24.5, 59.0, -10.0]

PROBLEM: [67, -46, -74]

SOLUTION:
[10.5, -60.0]