The total population of Asia is 3.823 billion, the total population of Europe is 726 million, and the total population of the Americas is 869 million. How many billion more is the population of Asia than the total population of Europe and the United States?
亚洲的总人口是38.23亿，欧洲的总人口是7.26亿，美洲总人口是8.69亿，亚洲的人口比欧美两洲人口总数还多多少亿？
<gadget id="calculator">7.26 + 8.69</gadget>
<output>15.95</output>

<gadget id="calculator">38.23 - 15.95</gadget>
<output>22.28</output>

<result>22.28</result>