Task: Program Execution
Input (English): [-87, 7, -39, -40, -49, 23, -31, 28, -89, 36, 88, -21]
Output (English): [-40.0, -16.0, -39.5, -44.5, -13.0, -4.0, -1.5, -30.5, -26.5, 62.0, 33.5]