On a map with a scale of 1:5000000, the distance from Shanghai to Hangzhou is 3.4cm. If a railway is built according to the route measured on the map, a train moving at a constant speed will travel along this road at a speed of 170km per hour. Find the time it takes for this train to travel from Shanghai to Hangzhou.
在一幅比例尺为1：5000000的地图上，量得上海到杭州的距离是3.4cm，如果按地图中所测量的路线修一条铁路，一列匀速运动的火车，以每小时170km的速度在这条铁路上行驶，求这列火车从上海到杭州所需要的时间．
<gadget id="calculator">1 / 5_000_000</gadget>
<output>1/5_000_000 = around 0</output>

<gadget id="calculator">3.4 / (1/5_000_000) / 100_000</gadget>
<output>170</output>

<gadget id="calculator">170 / 170</gadget>
<output>1</output>

<result>1</result>