A factory plans to produce 2400 machine parts, 1860 have already been produced, and the rest produce 27 per day. How many days will it take to complete the task?
某工厂计划生产机器零件2400个，已经生产了1860个，其余的每天生产27个，还需要多少天完成任务？
<gadget id="calculator">2_400 - 1_860</gadget>
<output>540</output>

<gadget id="calculator">540 / 27</gadget>
<output>20</output>

<result>20</result>