It takes about 90 minutes for the "Shenzhou IV" spacecraft launched by my country to circle the earth for a total of 108 times. How many minutes did it take?
我国发射的"神舟"四号飞船绕地球一周约90分钟，一共绕地球108圈，用了多少分钟？
<gadget id="calculator">90 * 108</gadget>
<output>9_720</output>

<result>9_720</result>