It is planned to plant 4,800 trees, and 4,000 trees will be planted in the first 20 days. According to this calculation, how many days will it take to complete the task? (Solve with ratio)
计划植树4800棵，前20天植树4000棵．照这样计算，完成任务需多少天？(用比例解)
<gadget id="calculator">4_000 / 20</gadget>
<output>200</output>

<gadget id="calculator">4_800 / 200</gadget>
<output>24</output>

<result>24</result>