A ship departs from Port A at 9:30 am and arrives at Port B at 1:30 pm, traveling an average of 25 kilometers per hour. How many kilometers is the waterway between these two ports?
一艘轮船上午9时30分从甲港出发，下午1时30分到达乙港，平均每小时航行25千米．这两个港口之间的水路是多少千米？
<gadget id="calculator">25 * 4</gadget>
<output>100</output>

<result>100</result>