An odd and very difficult riddle

I haven't the slightest as to what the answer is to this one, and I've given it some thought. The direct translation of the riddle from Hebrew is as follows:

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?

If anyone is familiar with the riddle let alone knows a credible answer, I'd be more than happy to hear it