The farm needs to harvest 600 hectares of wheat, and 200 hectares were harvested in the first 4 days. Based on this calculation, how many days will it take to complete the rest?
农场要收割600公顷小麦，前4天收割了200公顷，照这样计算，剩下的还要几天完成？
<gadget id="calculator">600 - 200</gadget>
<output>400</output>

<gadget id="calculator">200 / 4</gadget>
<output>50</output>

<gadget id="calculator">400 / 50</gadget>
<output>8</output>

<result>8</result>