If the perimeter of a rectangle is 24 cm and the ratio of length to width is 5:1, what is the area of the rectangle in square centimeters?
长方形的周长是24厘米，长宽的比是5：1，长方形的面积是多少平方厘米．
<gadget id="calculator">24 / 2</gadget>
<output>12</output>

<gadget id="calculator">5 + 1</gadget>
<output>6</output>

<gadget id="calculator">5 / 6</gadget>
<output>5/6 = around 0.833333</output>

<gadget id="calculator">12 * (5/6)</gadget>
<output>10</output>

<gadget id="calculator">1 / 6</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">12 * (1/6)</gadget>
<output>2</output>

<gadget id="calculator">10 * 2</gadget>
<output>20</output>

<result>20</result>