A rectangular piece of land, the ratio of length to width is 5:2, and the length is 12 meters longer than the width, what is the area of the rectangle?
一块长方形的地，长和宽的比是5：2，长比宽多12米，这个长方形的面积是多少？
<gadget id="calculator">5 - 2</gadget>
<output>3</output>

<gadget id="calculator">12 / 3</gadget>
<output>4</output>

<gadget id="calculator">4 * 5</gadget>
<output>20</output>

<gadget id="calculator">4 * 2</gadget>
<output>8</output>

<gadget id="calculator">20 * 8</gadget>
<output>160</output>

<result>160</result>