Two Girls Leave Waiter a $3.33 Tip; He Glances at the Order and Grasps the Situation

Specific

Trevor watched as the pair walked through the door and disappeared. There was only him and the bill left at the table now. Is he capable of cracking the code in front of him? Could he miss the bigger picture?

Specific

His eyes remained fixed on the bill, confused as ever. They had left him a tip of $33.30. Their tip was oddly specific. What’s the reason?