There are 9 pages in a stamp album, 4 lines on each page, and 6 stamps on each line. How many stamps can be pasted in such a stamp album?
一本邮册共有9页，每页贴4行，每行贴6张，这样的一本邮册一共可以贴多少张邮票？
<gadget id="calculator">6 * 4 * 9</gadget>
<output>216</output>

<result>216</result>