The perimeter of the rectangle is 72 cm, and the ratio of length to width is 5:1, what is the area of the rectangle?
长方形的周长为72厘米，已知长与宽的比为5：1，求长方形的面积是多少？
<gadget id="calculator">72 / 2</gadget>
<output>36</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">1 / 6</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">36 * (5/6) * 36 * (1/6)</gadget>
<output>180</output>

<result>180</result>