Changshan Village plans to reclaim and plant trees on a rectangular wasteland with a length of 25 kilometers and a width of 18 kilometers. It plans to plant 3,800 trees per hectare. How many trees will be planted in this land?
长山村准备在长25千米、宽18千米的长方形荒地上退垦还林植树，每公顷计划种植3800棵，这块地一共种树多少棵？
<gadget id="calculator">25 * 18 * 100 * 3_800</gadget>
<output>171_000_000</output>

<result>171_000_000</result>