A rectangular nursery is equal in area to a square nursery. It is known that the side length of a square nursery is 18 meters, and the length of a rectangular nursery is 36 meters. What is the width of a rectangular nursery in meters?
一个长方形苗圃和一个正方形苗圃面积相等．已知正方形苗圃的边长是18米，长方形苗圃长是36米，长方形苗圃宽是多少米？
<gadget id="calculator">18 / 36</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">18 * (1/2)</gadget>
<output>9</output>

<result>9</result>