The length of a rectangle is 14.5 cm. If the length increases by 4.5 cm and the width remains the same, its area increases by 38.7 cm2. What was the original area of the rectangle?
一个长方形长14.5厘米，如果长增加4.5厘米，宽不变，它的面积就增加38.7平方厘米．这个长方形原来的面积是多少？
<gadget id="calculator">38.7 / 4.5</gadget>
<output>8.6</output>

<gadget id="calculator">14.5 * 8.6</gadget>
<output>124.7</output>

<result>124.7</result>