What does Esther 9:12 mean?

He said to Queen Esther, 'The Jews have killed five hundred men in Susa, including Haman's ten sons. What do you think they've done in the rest of the provinces? Is there anything else you want? Just ask, and I'll make it happen.' Esther 9:12 - Modern Text Bible

(The king tells Esther about the events and offers to grant her any further requests.)