According to the results of the fifth national census, the total population of our country is about 1.3 billion. If each person saves 0.1 yuan, how many yuan will the country save.
第五次全国人口普查结果显示，我国总人口约为13亿，如果每人节约0.1元，全国将节约多少万元．
<gadget id="calculator">13 * 0.1</gadget>
<output>1.3</output>

<gadget id="calculator">1.3 * 10_000</gadget>
<output>13_000</output>

<result>13_000</result>