Xinya stationery cabinet sells 18 boxes of pens a day, 12 pens in each box, and 5 yuan for a pen. How much is it sold in total? (Write out the idea of solving the problem)
新亚文具柜一天卖出18盒钢笔，每盒12枝，一枝钢笔5元，一共卖了多少元？(写出解题思路)
<gadget id="calculator">18 * 12 * 5</gadget>
<output>1_080</output>

<result>1_080</result>