Manufacture 10,000 pairs of disposable chopsticks and cut down 20 trees. Our country consumes 1.5 million pairs of disposable chopsticks every day. How many trees are cut every day?
制造一万双一次性筷子砍伐20棵树，我国每天消耗一次性筷子150万双，每天砍多少棵树．
<gadget id="calculator">20 * 150</gadget>
<output>3_000</output>

<result>3_000</result>