The store shipped 40 boxes of unlined clothing, 25 sets in each box. After selling 185 sets, how many sets are left?
商店运来40箱单衣，每箱25套，卖出185套后，还剩多少套？
<gadget id="calculator">25 * 40</gadget>
<output>1_000</output>

<gadget id="calculator">1_000 - 185</gadget>
<output>815</output>

<result>815</result>