In Xiaohua's nursery, there are 9 rows of pine seedlings and 9 rows of cypress seedlings, 54 pine seedlings in each row, and 67 cypress seedlings in each row. How many fewer pine saplings than cypress saplings?
小华家的苗圃里有松树苗和柏树苗各9行，松树苗每行54棵，柏树苗每行67棵．松树苗比柏树苗少多少棵？
<gadget id="calculator">9 * 67</gadget>
<output>603</output>

<gadget id="calculator">9 * 54</gadget>
<output>486</output>

<gadget id="calculator">603 - 486</gadget>
<output>117</output>

<result>117</result>