Task: Program Execution
Input (English): [83, 34, 98, 67, -46, -61, -100, 86, -71, -64, -74, 66]
Output (English): [58.5, 66.0, 82.5, 10.5, -53.5, -80.5, -7.0, 7.5, -67.5, -69.0, -4.0]