Hanying Primary School assigns the task of planting trees to grades 6 and 5 at a ratio of 3:2. 54 trees should be planted in sixth grade, how many trees should be planted in fifth grade? (answered in two different ways)
汉英小学把植树任务按3：2分配给六年级和五年级．六年级要植树54棵，五年级要栽树多少棵？(用两种不同的方法解答)
<gadget id="calculator">54 / 3</gadget>
<output>18</output>

<gadget id="calculator">18 * 2</gadget>
<output>36</output>

<result>36</result>