Using a piece of rectangular red cloth with a length of 6 meters and a width of 4 meters, make two triangular red flags whose right-angled sides are 4 decimeters and 5 decimeters respectively. How many sides can you make at most?
用一块长6米、宽4米的长方形红布，做两条直角边分别是4分米和5分米的三角形红旗，最多可以做多少面？
<gadget id="calculator">10 / 5</gadget>
<output>2</output>

<gadget id="calculator">10 / 4</gadget>
<output>5/2 = around 2.5</output>

<gadget id="calculator">6 * 2 * 4 * (5/2) * 2</gadget>
<output>240</output>

<result>240</result>