On a map with a scale of (1/1500000), the distance from Zhengzhou to Kaifeng is about 5 centimeters, and the distance between Zhengzhou and Kaifeng is about 5 kilometers.
在一幅比例尺是(1/1500000)地图上，量得郑州至开封大约5厘米，郑州与开封大约相距多少千米．
<gadget id="calculator">1 / 1_500_000</gadget>
<output>1/1_500_000 = around 0.000001</output>

<gadget id="calculator">5 / (1/1_500_000) / 100_000</gadget>
<output>75</output>

<result>75</result>