A piece of white cloth is 8 meters long and 1.6 meters wide. Use it to make two triangle scarves with 0.8-meter sides. How many pieces can you make?
一块白布长8米，宽1.6米，用它作成两条直角边都是0.8米的三角巾，可以做几条？
<gadget id="calculator">8 * 1.6</gadget>
<output>12.8</output>

<gadget id="calculator">0.8 / 2</gadget>
<output>0.4</output>

<gadget id="calculator">0.8 * 0.4</gadget>
<output>0.32</output>

<gadget id="calculator">12.8 / 0.32</gadget>
<output>40</output>

<result>40</result>