Task: Program Execution
Input (English): [21, 96, 28, -62, 55, 54, -8, 70, -90, 13, 82, 31]
Output (English): [58.5, 62.0, -17.0, -3.5, 54.5, 23.0, 31.0, -10.0, -38.5, 47.5, 56.5]