If the perimeter of a rectangle is 42 cm and its width is 3/4 of its length, what is the area of the rectangle in square centimeters?
一个长方形的周长为42厘米，宽是长的(3/4)，这个长方形的面积是多少平方厘米
<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">1 + (3/4)</gadget>
<output>7/4 = around 1.75</output>

<gadget id="calculator">42 / 2 / (7/4)</gadget>
<output>12</output>

<gadget id="calculator">12 * (3/4)</gadget>
<output>9</output>

<gadget id="calculator">12 * 9</gadget>
<output>108</output>

<result>108</result>