Master Wang produces a batch of parts. If 150 parts are produced every day in 12 days, and the actual production is 180 parts per day, how many days does it actually take him to complete? (Solution with proportional knowledge)
王师傅生产一批零件，如果每天生产150个12天完成，实际每天生产180个，那么他实际需要几天能完成？(用比例知识解)
<gadget id="calculator">150 * 12</gadget>
<output>1_800</output>

<gadget id="calculator">1_800 / 180</gadget>
<output>10</output>

<result>10</result>