my country's self-developed "Shenzhou-6" manned spacecraft was successfully launched at 9:00 on October 12, 2005, and it circled the earth 77 times in space. It is known that it takes about 7.5 hours to circle the earth five times, so how long has the manned spacecraft Shenzhou "6" been in space? (Answer with proportional knowledge).
我国自行研制的"神州"六号载人飞船于2005年10月12日9时顺利发射成功，它在太空绕地球转了77圈．已知绕地球5圈大约需要7.5小时，那么神州"六号"载人飞船在太空大约运行了多长时间？(用比例知识解答)．
<gadget id="calculator">77 * 7.5</gadget>
<output>577.5</output>

<gadget id="calculator">577.5 / 5</gadget>
<output>115.5</output>

<result>115.5</result>