def console_monitor(a, b):
    """
    Simple monitor function which can be used with :obj:`calculate_spectrum`.

    Prints in stdout 'a/b'.

    Args:
        a: An object representing the completed amount (e.g., a number representing a part...).
        b: An object representing the total amount (... of a number representing a total).


    """
    print('Calculation: ', a, '/', b)
