If the width of a rectangle remains the same, the length is increased by 5 meters, and the area is increased by 30 square meters. If the length remains the same, the width is increased by 3 meters, and the area is increased by 48 square meters. What is the original area of the rectangle?
一个长方形，如果宽不变，长增加5米，面积增加30平方米，如果，长不变，宽增加3米，面积增加48平方米，这个长方形原来的面积是多少？
<gadget id="calculator">48 / 3</gadget>
<output>16</output>

<gadget id="calculator">30 / 5</gadget>
<output>6</output>

<gadget id="calculator">16 * 6</gadget>
<output>96</output>

<result>96</result>