The railway from Xi'an to Zhengzhou is 480km long. If it is drawn on a map with a scale of 1:12000000, how long should it be drawn?
西安到郑州的铁路长480km，如果画在比例尺为1：12000000的地图上，应画多长？
<gadget id="calculator">1 / 12_000_000</gadget>
<output>1/12_000_000 = around 0</output>

<gadget id="calculator">480 * 100_000 * (1/12_000_000)</gadget>
<output>4</output>

<result>4</result>