Xiaogang's family bought a new house, and his father planned to use a kind of floor to pave Xiaogang's room. Each floor is 50 centimeters long, 8 centimeters wide, and 2 centimeters thick. As a result, just 300 such floors were used. How many square meters is Xiaogang's room?
小刚家买了一套新房，爸爸准备用一种地板来铺小刚的房间．每块地板长50厘米，宽8厘米，厚2厘米，结果刚好用了300块这种地板．小刚的房间有多少平方米？
<gadget id="calculator">50 / 100</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">8 / 100</gadget>
<output>2/25 = around 0.08</output>

<gadget id="calculator">(1/2) * (2/25) * 300</gadget>
<output>12</output>

<result>12</result>