A rectangular square covers an area of 8 hectares and its width is 100 meters. What is the perimeter of the square in meters?
一个长方形广场占地面积是8公顷，它的宽是100米，这个广场的周长是多少米？
<gadget id="calculator">10_000 / 100</gadget>
<output>100</output>

<gadget id="calculator">8 * 100</gadget>
<output>800</output>

<gadget id="calculator">800 + 100</gadget>
<output>900</output>

<gadget id="calculator">900 * 2</gadget>
<output>1_800</output>

<result>1_800</result>