Teacher Du prints a 12-page article, with 20 lines per page and 30 characters per line. How many words are there in this article?
杜老师打印一份12页的文章，每页20行，每行30个字，这篇文章有多少个字？
<gadget id="calculator">12 * 20 * 30</gadget>
<output>7_200</output>

<result>7_200</result>