A mere knock was more than enough.
Lucretia knocked on the door once, the situation was ridiculous to Valentine and all of his maidens.
After walking through endless corners, they reached a dark close where there was... a door.
Perhaps Lucretia's bantering had deviated them from the ridiculousness of the situation, be it as it may, once she knocked on the door, this one was opened by a demon wearing rather dignified clothing, his skin was green signifying his greed was
"How many?" He asked with his gaze fixed on the one that had knocked on the door, a question that none of them understood except, of course, Lucretia.
"Three million..."
!!!
The demon gasped in disbelief and even mock when she said that number.