piece of rectangular red paper with a length of 80 centimeters and a width of 50 centimeters needs to be cut into triangular small red flags whose right-angled sides are 5 centimeters and 4 centimeters respectively. How many can be cut in total?
一张长为80厘米，宽50厘米的长方形红纸，要剪成直角边分别是5厘米和4厘米的三角形小红旗，共可剪多少个？
<gadget id="calculator">50 / 5</gadget>
<output>10</output>

<gadget id="calculator">80 / 4</gadget>
<output>20</output>

<gadget id="calculator">10 * 20</gadget>
<output>200</output>

<gadget id="calculator">200 * 2</gadget>
<output>400</output>

<result>400</result>