If the length of a rectangle is reduced by 2 cm and the width is increased by 1/4, it becomes a square with the same area as the original rectangle. What is the area of the original rectangle in square centimeters?
一个长方形的长减少2厘米，宽增加(1/4)，就变成了一个面积与原来长方形面积相等的正方形，原来长方形的面积是多少平方厘米．
<gadget id="calculator">8 / 5</gadget>
<output>8/5 = around 1.6</output>

<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">(8/5) / (1/5)</gadget>
<output>8</output>

<gadget id="calculator">8 * 8</gadget>
<output>64</output>

<result>64</result>