There is a kind of laundry detergent, the washing effect is best when 12 ml is added to 5 liters of water, how many ml of this laundry detergent is appropriate to pour into a washing machine filled with 60 liters of water?
有一种洗衣液，在5升水中加人12毫升时洗衣效果最好，往一台注入了60升水的洗衣机内倒入多少毫升这样的洗衣液比较合适？
<gadget id="calculator">12 * 60</gadget>
<output>720</output>

<gadget id="calculator">720 / 5</gadget>
<output>144</output>

<result>144</result>