A fence is built around a square land with a side length of 12 meters, and a wooden stake is placed every 4 meters. How many wooden stakes are prepared in total?
在一个边长为12米的正方形土地四周围篱笆，每隔4米打1根木桩，一共要准备多少根木桩？
<gadget id="calculator">4 / 4</gadget>
<output>1</output>

<gadget id="calculator">12 * 1</gadget>
<output>12</output>

<result>12</result>