my country successfully launched the Shenzhou-6 spacecraft, which circled the earth 77 times and returned safely. The time of each lap is about 90 minutes, so how many minutes will it take?
我国成功发射了神舟六号飞船，它环绕地球77圈后安全返回．每一圈的时间约是90分，那么大约要多少分？
<gadget id="calculator">90 * 77</gadget>
<output>6_930</output>

<result>6_930</result>