Task: Program Execution
Input (English): [-15, -37, -91, -88, -52, -30, 63, 69, -36, 41, 39, -49, 7, -57, -37]
Output (English): [-26.0, -64.0, -89.5, -70.0, -41.0, 16.5, 66.0, 16.5, 2.5, 40.0, -5.0, -21.0, -25.0, -47.0]