An engineering team is building a canal. It plans to build 600 meters per day and complete the task in 40 days. In fact, it only repairs 800 meters in 2 days. At this speed, how many days can it be completed? (answer with ratio)
某工程队修一条水渠，计划每天修600米，40天完成任务，实际2天只修800米，照这样的速度，多少天可以做完？(用比例解答)
<gadget id="calculator">600 * 40</gadget>
<output>24_000</output>

<gadget id="calculator">800 / 2</gadget>
<output>400</output>

<gadget id="calculator">24_000 / 400</gadget>
<output>60</output>

<result>60</result>