A ship travels an average of 42 kilometers per hour, departs at 10:30 am, and arrives at its destination at 3:30 pm. How many kilometers has the boat traveled in total?
一艘轮船平均每小时行42千米，上午10：30出发，下午3：30分到达目的地．这艘船一共行了多少千米？
<gadget id="calculator">42 * 5</gadget>
<output>210</output>

<result>210</result>