A ship travels 28 kilometers per hour. It departs from Port A at 15:00 on the first day and arrives at Port B at 6:00 am on the second day. How long is the route between the two ports?
一艘轮船每小时行28千米，第一天15时从甲港开出，第二天早上6时到达乙港，两个港口之间的航线有多长？
<gadget id="calculator">24 - 15</gadget>
<output>9</output>

<gadget id="calculator">9 + 6</gadget>
<output>15</output>

<gadget id="calculator">28 * 15</gadget>
<output>420</output>

<result>420</result>