The total length of the railway from Shanghai to Tianjin is about 1,330 kilometers, and a train runs 350 kilometers in 5 hours. According to this calculation, how many hours does it take to travel from Shanghai to Tianjin? (Solve with ratio)
上海到天津的铁路全长约1330千米，一列火车5小时350千米，照这样计算，从上海到天津需要几小时？(用比例解)
<gadget id="calculator">1_330 * 5</gadget>
<output>6_650</output>

<gadget id="calculator">6_650 / 350</gadget>
<output>19</output>

<result>19</result>