Use red paper to make a right-angled triangle small flag. It is known that the length of the red paper is 0.6 meters and the width is 0.5 meters. The two right-angled sides of the small red flag are 0.1 meters and 0.3 meters respectively.
用红纸做直角三角形小旗，已知红纸长0.6米，宽0.5米，小红旗的两条直角边分别是0.1米，0.3米，共可以做多少面小红旗．
<gadget id="calculator">0.6 / 0.3</gadget>
<output>2</output>

<gadget id="calculator">0.5 / 0.1</gadget>
<output>5</output>

<gadget id="calculator">2 * 5 * 2</gadget>
<output>20</output>

<result>20</result>