The "Shenzhou V" manned spacecraft carried the aerospace hero Yang Liwei back to the earth from space at 6:51 am on October 16, 2003, realizing the dream of the Chinese nation to fly. The spacecraft flew 14 times around the earth, of which the last 10 circles flew along a circular orbit 343 kilometers above the ground. Please calculate how many kilometers the spaceship has traveled in a circular orbit (the radius of the earth is 6371 kilometers, pi = 3.14).
"神舟五号"载人飞船载着航天英雄杨利伟于2003年10月16日清晨6时51分从太空返回地球，实现了中华民族的飞天梦．飞船绕地球共飞行14圈，其中后10圈沿离地面343千米的圆形轨道飞行．请计算飞船沿圆形轨道飞行了多少千米(地球半径为6371千米，圆周率π=3.14)．
<gadget id="calculator">6_371 + 343</gadget>
<output>6_714</output>

<gadget id="calculator">2 * 3.14 * 6_714 * 10</gadget>
<output>421_639.2</output>

<result>421_639.2</result>