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: [33, 15, -60, -30, 13, 49]

SOLUTION: [24.0, -22.5, -45.0, -8.5, 31.0]

PROBLEM: [-1, 75, -1, -37, -38, -10, 70, -75, -98, 39, 37, -15, 60]

SOLUTION: [37.0, 37.0, -19.0, -37.5, -24.0, 30.0, -2.5, -86.5, -29.5, 38.0, 11.0, 22.5]

PROBLEM: [29, 91, -69, 50, -24, -3, 89, 50, -21]

SOLUTION:
[60.0, 11.0, -9.5, 13.0, -13.5, 43.0, 69.5, 14.5]