Cut off a piece of rectangular paper by 10 cm from the length and 5 cm from the width, leaving exactly a square. It is known that the cut part is 140 cm2. Find the area of the original rectangle.
把一张长方形纸，长剪去10厘米，宽剪去5厘米，正好剩下一个正方形，已知剪去部分是140平方厘米，求原来长方形的面积．
<gadget id="calculator">10 * 5</gadget>
<output>50</output>

<gadget id="calculator">140 - 50</gadget>
<output>90</output>

<gadget id="calculator">5 + 10</gadget>
<output>15</output>

<gadget id="calculator">90 / 15</gadget>
<output>6</output>

<gadget id="calculator">6 + 10</gadget>
<output>16</output>

<gadget id="calculator">6 + 5</gadget>
<output>11</output>

<gadget id="calculator">16 * 11</gadget>
<output>176</output>

<result>176</result>