since im poor and this one is kinda easy...this one is wurth/5,000

Milton Hurst is a typical English gentleman. Once he entered a Chinese restaurant and ordered his food, but the waiter was taking a long time. Milton was annoyed by this and decided to leave without eating, but before he left he took a note (note as in a piece of paper not a monetary denomination) and wrote on it "180,100" and left mad. After 2 hours the waiter arrived but didn't understand the note. What did Mr. Hurst mean?