On a map with a scale of 1:40000000, the length of the high-speed railway from Wuhan to Beijing is measured to be 3cm. On another map with a scale of 1:25000000, what is the length of this high-speed railway?
在一幅比例尺是1：40000000的地图上，量得武汉到北京的高速铁路长3cm，在另一幅比例尺为1：25000000的地图上，这条高速铁路图上长度是多少？
<gadget id="calculator">1 / 40_000_000</gadget>
<output>1/40_000_000 = around 0</output>

<gadget id="calculator">1 / 25_000_000</gadget>
<output>1/25_000_000 = around 0</output>

<gadget id="calculator">(1/40_000_000) / (1/25_000_000)</gadget>
<output>5/8 = around 0.625</output>

<gadget id="calculator">3 / (5/8)</gadget>
<output>24/5 = around 4.8</output>

<result>24/5 = around 4.8</result>