To make 10 triangular iron sheet road signs, each with a base of 15 decimeters and a height of 8 decimeters, how many square decimeters of iron sheets are needed in total?
做10个三角形铁皮路牌，每块底15分米，高8分米，一共需要铁皮多少平方分米？
<gadget id="calculator">8 / 2</gadget>
<output>4</output>

<gadget id="calculator">15 * 4 * 10</gadget>
<output>600</output>

<result>600</result>