If the perimeter of a rectangle is 56 decimeters and the ratio of length to width is 4:3, what is the area in square decimeters?
一个长方形的周长为56分米，长与宽的比为4：3，面积是多少平方分米．
<gadget id="calculator">56 / 2</gadget>
<output>28</output>

<gadget id="calculator">4 + 3</gadget>
<output>7</output>

<gadget id="calculator">4 / 7</gadget>
<output>4/7 = around 0.571429</output>

<gadget id="calculator">28 * (4/7)</gadget>
<output>16</output>

<gadget id="calculator">3 / 7</gadget>
<output>3/7 = around 0.428571</output>

<gadget id="calculator">28 * (3/7)</gadget>
<output>12</output>

<gadget id="calculator">16 * 12</gadget>
<output>192</output>

<result>192</result>