triangular iron plate has a base of 15 decimeters and a height of 8 decimeters. It needs to be painted on both sides. The paint is 19 yuan per square meter. How much is the total cost?
一块三角形的铁板的底是15分米，高是8分米，要在它的两面都涂上油漆，这种油漆每平方米19元，一共需要多少元钱？
<gadget id="calculator">8 / 2</gadget>
<output>4</output>

<gadget id="calculator">15 * 4 * 19</gadget>
<output>1_140</output>

<result>1_140</result>