A rectangular pasture is surrounded by fences on three sides, and the fourth side is against a wall with a length of 100 meters, including a wooden stake every 12 meters at the junction with the wall. Then a rectangular pasture with a length of 60 meters and a width of 36 meters needs at least How many stakes.
一个长方形牧场的三面用篱笆围成，第四条边靠着一面长100米的墙，包括与墙交界处每隔12米有一根木桩，那么一个长60米、宽36米的长方形牧场最少需要木桩多少根．
<gadget id="calculator">36 * 2</gadget>
<output>72</output>

<gadget id="calculator">60 + 72</gadget>
<output>132</output>

<gadget id="calculator">132 / 12</gadget>
<output>11</output>

<gadget id="calculator">11 + 1</gadget>
<output>12</output>

<result>12</result>