The Red Star Processing Factory needs to produce 5400 parts, and 1800 parts were produced in 6 days. According to this calculation, how many days can the task be completed?
红星加工厂要生产5400个零件，6天生产了1800个．照这样计算，几天可以完成任务？
<gadget id="calculator">1_800 / 6</gadget>
<output>300</output>

<gadget id="calculator">5_400 / 300</gadget>
<output>18</output>

<result>18</result>