A rectangular paddy field is 250 meters long and 80 meters wide, what is the area in hectares
一块长方形水稻田长250米，宽80米，面积是多少公顷
<gadget id="calculator">1 * 10_000</gadget>
<output>10_000</output>

<gadget id="calculator">80 / 10_000</gadget>
<output>1/125 = around 0.008</output>

<gadget id="calculator">250 * (1/125)</gadget>
<output>2</output>

<result>2</result>