There are 8 rows of fir trees in the campus, each with 27 trees. The number of pine trees is three times that of fir trees. How many pine trees are there?
校园里有8行杉树，每行27棵．松树的棵树是杉树的3倍，松树有多少棵？
<gadget id="calculator">8 * 27 * 3</gadget>
<output>648</output>

<result>648</result>