Recycling one ton of waste paper can protect 16 trees, and recycling 64.5 tons of waste paper can protect how many trees.
回收一吨废纸，可以保护16棵树，回收64.5吨废纸可以保护多少棵树．
<gadget id="calculator">16 * 64.5</gadget>
<output>1_032</output>

<result>1_032</result>