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: [-13, 97, -60, -24, 6, 8, -89, -98, 20, -76]

SOLUTION: [42.0, 18.5, -42.0, -9.0, 7.0, -40.5, -93.5, -39.0, -28.0]

PROBLEM: [-50, 22, -84, -93, 27]

SOLUTION: [-14.0, -31.0, -88.5, -33.0]

PROBLEM: [-30, -14, -29, -90, -7, -16, 9, -40, -6, -67]

SOLUTION:
[-22.0, -21.5, -59.5, -48.5, -11.5, -3.5, -15.5, -23.0, -36.5]