The thickness of a piece of paper is about 0.12 millimeters, and the population of Shenzhen is about 9 million. If each person saves a piece of paper, how many centimeters will it be stacked.
一张纸的厚度约为0.12毫米，深圳市大约有900万人口，如果每人节约一张纸，叠起来有多少厘米．
<gadget id="calculator">900 * 10_000</gadget>
<output>9_000_000</output>

<gadget id="calculator">9_000_000 * 0.012</gadget>
<output>108_000</output>

<result>108_000</result>