rectangular woodland is 16 meters long and 5 meters wide. Each square meter of forest produces 75 grams of oxygen per day. How many grams of oxygen can this forest produce per day?
一块长方形树林地，长16米，宽5米．每平方米树林每天制造75克氧气，这块树林一天能制造多少克氧气？
<gadget id="calculator">16 * 5 * 75</gadget>
<output>6_000</output>

<result>6_000</result>