The height of 10 1 yuan coins is about 2 cm. What is the approximate height in meters of 100 million one-dollar coins stacked together?
10枚1元硬币的高度约是2厘米．1亿枚一元硬币叠放在一起的高度约是多少米．
<gadget id="calculator">0.2 * 100_000_000</gadget>
<output>20_000_000</output>

<gadget id="calculator">20_000_000 / 100</gadget>
<output>200_000</output>

<result>200_000</result>