The perimeter of a rectangle is 48 cm and the ratio of length to width is 5:1. What is the area of this rectangle in square centimetres.
一个长方形的周长是48厘米，长与宽的比是5：1．这个长方形的面积是多少平方厘米．
<gadget id="calculator">48 / 2</gadget>
<output>24</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">24 * (5/6)</gadget>
<output>20</output>

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

<gadget id="calculator">24 * (1/6)</gadget>
<output>4</output>

<gadget id="calculator">20 * 4</gadget>
<output>80</output>

<result>80</result>