my country, South Korea, Japan, Mongolia and other countries belong to East Asian countries. Among them, Korea, Japan, Mongolia and other countries have a total land area of 2.17 million square kilometers. The territory of our country is 920,000 square kilometers more than four times the combined area of these countries. What is the total area of East Asian countries?
我国与韩、日、蒙等国家同属于东亚国家．其中、韩、日、蒙等国的土地总面积是217万平方千米．我国领土的面积比这几国面积之和的4倍还多92万平方千米．东亚国家的总面积是多少万平方千米？
<gadget id="calculator">217 * 4</gadget>
<output>868</output>

<gadget id="calculator">868 + 92 + 217</gadget>
<output>1_177</output>

<result>1_177</result>