25 groups from Hongqi Primary School participated in tree planting, and each group planted 4 kinds of saplings. The purchase of saplings cost 3,600 yuan. How much is each sapling?
红旗小学有25个小组参加植树，每个小组种了4种树苗；购买树苗共花了3600元，每棵树苗多少钱？
<gadget id="calculator">4 * 25</gadget>
<output>100</output>

<gadget id="calculator">3_600 / 100</gadget>
<output>36</output>

<result>36</result>