A rectangular piece of white cloth is 40 meters long and 2 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2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">2 / 0.4</gadget>
<output>5</output>

<gadget id="calculator">100 * 5 * 2</gadget>
<output>1_000</output>

<result>1_000</result>