A class of young pioneers planted trees in their spare time and planted 162 trees in 3 days. According to this calculation, how many days will it take to plant 270 trees? (answer with ratio)
某班少先队员用课余时间植树，3天共植树162棵，照这样计算，要植树270棵需要多少天？(用比例解答)
<gadget id="calculator">162 / 3</gadget>
<output>54</output>

<gadget id="calculator">270 / 54</gadget>
<output>5</output>

<result>5</result>