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: [77, 66, 11]

SOLUTION: [71.5, 38.5]

PROBLEM: [-33, -1, -94, -98, -30, 45, -46]

SOLUTION: [-17.0, -47.5, -96.0, -64.0, 7.5, -0.5]

PROBLEM: [43, -67, 56]

SOLUTION:
[-12.0, -5.5]