It is necessary to plant a lawn in a parallelogram open space with a base of 25 meters and a height of 8.4 meters next to the road. The lawn costs 12 yuan per square meter. How much does it cost to plant this lawn?
要在公路旁一块底25米，高8.4米的平行四边形空地里种草坪，每平方米草坪要12元，种这块草坪需要多少钱？
<gadget id="calculator">25 * 8.4 * 12</gadget>
<output>2_520</output>

<result>2_520</result>