A dragon hoards jewels and gold in its cave. A jealous king snuck in and stole three prize jewels. The dragon burned him to a crisp and stole back its jewels, along with twice as many of the king’s crown jewels from his crown that melted in the dragon’s fire. The new jewels were a third of the number of jewels the dragon had owned before. How many jewels did the dragon own in the end?
Please reason step by step, and put your final answer within \boxed{}.
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