It takes 2 trees to cut down 10,000 pairs of disposable chopsticks. If our country consumes about 1.6 million pairs of disposable chopsticks a day, how many trees need to be cut down every day?
制造一万双一次性筷子需要砍伐2棵树，如果我国一天大约消耗一次性筷子160万双，每天需要砍伐树木多少棵．
<gadget id="calculator">2 * 160</gadget>
<output>320</output>

<result>320</result>