A wood factory needs to make 2,418 sets of furniture. It has been done for 15 days, and 135 sets are made every day. How many sets are left?
一个木工厂要做2418套家具，已经做了15天，每天做135套，还剩多少套没有做？
<gadget id="calculator">135 * 15</gadget>
<output>2_025</output>

<gadget id="calculator">2_418 - 2_025</gadget>
<output>393</output>

<result>393</result>