The municipal government intends to plant trees on a rectangular wasteland with a length of 10 kilometers and a width of 6 kilometers. If the average number of trees planted per hectare is 3,000, how many trees can be planted?
市政府打算在一块长10千米，宽6千米的长方形荒地上种树，按平均每公顷种树3000棵计算，能种多少棵树？
<gadget id="calculator">3_000 * 10 * 6 * 100</gadget>
<output>18_000_000</output>

<result>18_000_000</result>