On a map with a line segment scale of 1:2000, the distance between A and B is 3.5 cm. What is the actual distance in kilometers between A and B?
在一幅线段比例尺是1：2000的地图上，量得甲乙两地之间的距离是3.5厘米．甲乙两地间的实际距离是多少千米？
<gadget id="calculator">1 / 2_000</gadget>
<output>1/2_000 = around 0.0005</output>

<gadget id="calculator">3.5 / (1/2_000) / 99_999</gadget>
<output>0.070001</output>

<result>0.070001</result>