On a map, the length of the railway from Beijing to Shenyang is 5 cm. The scale of the map is 1:7,000,000. How many kilometers is the actual railway from Beijing to Shenyang?
在一幅地图上量得北京到沈阳的铁路长5厘米，地图的比例尺是1：7000000，北京到沈阳的铁路实际有多少千米？
<gadget id="calculator">1 / 7_000_000</gadget>
<output>1/7_000_000 = around 0</output>

<gadget id="calculator">5 / (1/7_000_000) / 100_000</gadget>
<output>350</output>

<result>350</result>