rectangular pond has an area of 220 square meters, the length remains the same, and the width is tripled. What is the area in square meters.
一个长方形池塘，面积是220平方米，长不变，宽扩大3倍．这时面积是多少平方米．
<gadget id="calculator">220 * 3</gadget>
<output>660</output>

<result>660</result>