The base of a triangular lawn is 18.4 meters long and the height is 2.5 meters. If the price of the lawn is 18 yuan per square meter, how much is the total cost of the lawn?
一个三角形草坪的底边长18.4米，高是2.5米，如果每平方米草坪价格是18元，这个草坪共需多少元钱？
<gadget id="calculator">2.5 / 2</gadget>
<output>1.25</output>

<gadget id="calculator">18.4 * 1.25 * 18</gadget>
<output>414</output>

<result>414</result>