If trees are planted around a pond with a perimeter of 48m, and one tree is planted every 4m, how many trees can be planted in total?
在一个周长是48m的池塘周围种树，每隔4m种一棵，一共可种多少棵？
<gadget id="calculator">48 / 4</gadget>
<output>12</output>

<result>12</result>