1 hectare of forest can reduce about 9 tons of water and soil loss per year, and a large forest area covers an area of 3 square kilometers, how many tons of water and soil loss can be reduced per year?
1公顷森林每年大约可以减少水土流失量9吨，一个大型林区占地3平方千米，每年大约可以减少水土流失量多少吨？
<gadget id="calculator">9 * 3 * 100</gadget>
<output>2_700</output>

<result>2_700</result>