Given the task definition and input, reply with output. In this task, you will use your knowledge about language (and common sense) to determine what element the marked number refers to. The numbers are marked with two underlines around them, like: _ number _. Your answer should be chosen from the given text, and should not contain other words.

Anya: You 're out of crystal balls . Those babies are really popular with the amateurs . Better restock and raise the price 10 % - make it _ 15 _ .
Rupert Giles: Anya ...
Anya: Your cash register looks like squirrels nest in it .
Rupert Giles: Anya ...
Anya: And the Hand of Glory packs some serious raw power . Better institute a 7-day background check for ...
Rupert Giles: Anya ! Would you like a job ?
Anya: Okay .
Rupert Giles: Good . Then we can talk shop tomorrow .
Anya: Okay ... Boss .
percent