Change the map with a scale of (1/2500) to a scale of (1/2000) and draw it again. How many centimeters are the two places AB and AB with a length of 5 cm on the original map on the newly drawn map?
把比例尺是(1/2500)的地图，改用为(1/2000)的比例尺重新画出来．原来图上长5厘米的AB两地，在新画的地图上长多少厘米？
<gadget id="calculator">1 / 2_500</gadget>
<output>1/2_500 = around 0.0004</output>

<gadget id="calculator">5 / (1/2_500)</gadget>
<output>12_500</output>

<gadget id="calculator">1 / 2_000</gadget>
<output>1/2_000 = around 0.0005</output>

<gadget id="calculator">12_500 * (1/2_000)</gadget>
<output>25/4 = around 6.25</output>

<result>25/4 = around 6.25</result>