A rectangular piece of land has a perimeter of 256 meters and a ratio of length to width of 5:3. Find the area of this piece of land?
一块长方形地，周长是256米，长与宽的比是5：3，求这块地的面积？
<gadget id="calculator">256 / 2</gadget>
<output>128</output>

<gadget id="calculator">5 + 3</gadget>
<output>8</output>

<gadget id="calculator">5 / 8</gadget>
<output>5/8 = around 0.625</output>

<gadget id="calculator">128 * (5/8)</gadget>
<output>80</output>

<gadget id="calculator">3 / 8</gadget>
<output>3/8 = around 0.375</output>

<gadget id="calculator">128 * (3/8)</gadget>
<output>48</output>

<gadget id="calculator">80 * 48</gadget>
<output>3_840</output>

<result>3_840</result>