A rectangular piece of white cloth is 40 meters long and 1.6 meters wide. Use it to cut into two triangles with 40 cm sides at right angles. How many triangles can be cut out?
一块长方形的白布，长40米，宽1.6米．用它剪裁成两条直角边都是40厘米的三角巾．可以剪出多少条三角巾？
<gadget id="calculator">40 / 0.4</gadget>
<output>100</output>

<gadget id="calculator">1.6 / 0.4</gadget>
<output>4</output>

<gadget id="calculator">100 * 4 * 2</gadget>
<output>800</output>

<result>800</result>