A rectangular piece of land has a ratio of length to width of 5:3 and a circumference of 64 meters. What is the area of the land in square meters?
一块长方形的地，长和宽的比是5：3，周长是64米，这块地的面积是多少平方米？
<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">1 + (3/5)</gadget>
<output>8/5 = around 1.6</output>

<gadget id="calculator">64 / 2 / (8/5)</gadget>
<output>20</output>

<gadget id="calculator">20 * (3/5)</gadget>
<output>12</output>

<gadget id="calculator">20 * 12</gadget>
<output>240</output>

<result>240</result>