A rectangular piece of land is 80 meters long and its width is less than its length (1/4). What is the area of this piece of land in square meters?
一块长方形的地，长为80米，宽比长少(1/4)，这块地的面积是多少平方米？
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">80 * (1/4)</gadget>
<output>20</output>

<gadget id="calculator">80 - 20</gadget>
<output>60</output>

<gadget id="calculator">80 * 60</gadget>
<output>4_800</output>

<result>4_800</result>