def calculate_cell_power_level(x, y, serial):
    """
    Calculate the convoluted power level of a cell based on the formula provided.
    :param x: the x coordinate
    :param y: the y coordinate
    :param serial: the serial number of the device
    :return: the power level

    >>> calculate_cell_power_level(3, 5, 8)
    4
    >>> calculate_cell_power_level(122, 79, 57)
    -5
    >>> calculate_cell_power_level(217, 196, 39)
    0
    >>> calculate_cell_power_level(101, 153, 71)
    4
    """
    rack_id = x + 10
    num = (rack_id * y + serial) * rack_id
    if abs(num) < 100:
        # There is no digit in the 100s position, so take it to be zero, and subtract five from it.
        return -5
    else:
        # Fetch the digit in the 100s position and subtract five from it.
        return int(str(num)[-3]) - 5