The area of a rectangle is 60 square decimeters. If the length remains the same and the width is increased to 3 times its original size, what is the area after the increase?
一个长方形的面积是60平方分米，如果长不变，宽增加到原来的3倍，增加后的面积是多少平方分米
<gadget id="calculator">60 * 3</gadget>
<output>180</output>

<result>180</result>