A train needs to travel 2340 kilometers, and it has traveled 820 kilometers. How many hours will it take to travel 80 kilometers per hour for the rest of the journey?
一列火车要行使2340千米，已经行使820千米．剩下的路程每小时行使80千米，还要多少小时？
<gadget id="calculator">2_340 - 820</gadget>
<output>1_520</output>

<gadget id="calculator">1_520 / 80</gadget>
<output>19</output>

<result>19</result>