The ratio of length to width of a rectangle is 4:3. If the width is increased by 3 cm, the original rectangle becomes a square. What is the area of the original rectangle in square centimeters?
一个长方形，长与宽的比是4：3，如果宽增加3厘米，原来的长方形就变成了正方形．原来长方形的面积是多少平方厘米．
<gadget id="calculator">4 - 3</gadget>
<output>1</output>

<gadget id="calculator">3 / 1</gadget>
<output>3</output>

<gadget id="calculator">3 * 4 * 3 * 3</gadget>
<output>108</output>

<result>108</result>