Make 100 triangular street signs with iron sheets, each with a base length of 12 decimeters and a height of 8 decimeters. How many square meters of iron sheets are needed in total?
用铁皮做100块三角形的路牌，每块底长12分米，高8分米．一共需要铁皮多少平方米？
<gadget id="calculator">8 / 2</gadget>
<output>4</output>

<gadget id="calculator">100 / 100</gadget>
<output>1</output>

<gadget id="calculator">12 * 4 * 1</gadget>
<output>48</output>

<result>48</result>