The perimeter of a rectangular piece of land is 156 meters, and the ratio of length to width is 8:5. What is its area in square meters?
一块长方形地的周长156米，长和宽的比是8：5，它的面积是多少平方米．
<gadget id="calculator">8 + 5</gadget>
<output>13</output>

<gadget id="calculator">156 / 2 / 13</gadget>
<output>6</output>

<gadget id="calculator">6 * 8</gadget>
<output>48</output>

<gadget id="calculator">6 * 5</gadget>
<output>30</output>

<gadget id="calculator">48 * 30</gadget>
<output>1_440</output>

<result>1_440</result>