The area of a rectangle is 48.5 square centimeters. If its length is expanded to 5 times its original size and its width remains the same, what is the area of the enlarged rectangle in square centimeters?
一个长方形的面积是48.5平方厘米，如果它的长扩大到原来的5倍，宽不变，扩大后的长方形面积是多少平方厘米．
<gadget id="calculator">48.5 * 5</gadget>
<output>242.5</output>

<result>242.5</result>