A rectangular orchard is 15 meters wide and twice as long as it is wide. What is the area of the orchard in square meters?
一个长方形果园，宽是15米，长是宽的2倍，这个果园的面积是多少平方米？
<gadget id="calculator">15 * 2</gadget>
<output>30</output>

<gadget id="calculator">15 * 30</gadget>
<output>450</output>

<result>450</result>