The ratio of length to width of a rectangular piece of land is 8:5. It is known that the length is 15 meters more than the width. Find the area of this piece of land.
一块长方形土地的长与宽的比是8：5，已知长比宽多15米，求这块地的面积．
<gadget id="calculator">8 - 5</gadget>
<output>3</output>

<gadget id="calculator">15 / 3</gadget>
<output>5</output>

<gadget id="calculator">5 * 8 * 5 * 5</gadget>
<output>1_000</output>

<result>1_000</result>