The garden of Xiaopang’s house is rectangular, 20 meters long, and 160 square meters in area. After expansion, the length has doubled. What is the current area?
小胖家的花园是长方形，长20米，面积是160平方米，扩建后，长增加到原来的2倍，那么现在的面积是多少？
<gadget id="calculator">160 / 20</gadget>
<output>8</output>

<gadget id="calculator">20 * 2 * 8</gadget>
<output>320</output>

<result>320</result>