The thickness of a protractor is about 1 mm, and the thickness of 1000 protractors is about 1 meter. According to this calculation, the thickness of 10 million protractors is about how many meters.
一把量角器的厚度大约是1毫米，1000把量角器摞起来的厚度大约是1米，照这样计算，1000万把量角器摞起来的厚度大约是多少米．
<gadget id="calculator">1 / 1_000</gadget>
<output>1/1_000 = around 0.001</output>

<gadget id="calculator">1_000 * 10_000 * (1/1_000)</gadget>
<output>10_000</output>

<result>10_000</result>