A rectangular lawn has an area of 100 square meters. After reconstruction, the length doubles and the width triples. What is the area of the expanded lawn?
一块长方形的草坪面积是100平方米．改建后，长扩大到原来的2倍，宽扩大到原来的3倍，扩大后草坪的面积是多少？
<gadget id="calculator">3 * 2</gadget>
<output>6</output>

<gadget id="calculator">100 * 6</gadget>
<output>600</output>

<result>600</result>