A residential area is rectangular, 500 meters long and 300 meters wide. How many hectares does this district occupy?
一个住宅小区呈长方形，长500米，宽300米．这个小区占地多少公顷？
<gadget id="calculator">500 * 300</gadget>
<output>150_000</output>

<gadget id="calculator">150_000 / 10_000</gadget>
<output>15</output>

<result>15</result>