Use a piece of colored paper with a length of 90 cm and a width of 24 cm to make a right-angled triangle flag. The two right-angled sides of each flag are 12 cm and 9 cm respectively. How many small flags can be made from this colored paper?
用一张长90厘米、宽24厘米的彩纸做直角三角形小旗，每面小旗的两条直角边分别是12厘米、9厘米．这张彩纸一共可以做多少面小旗？
<gadget id="calculator">90 / 9</gadget>
<output>10</output>

<gadget id="calculator">24 / 12</gadget>
<output>2</output>

<gadget id="calculator">10 * 2 * 2</gadget>
<output>40</output>

<result>40</result>