On a map with a scale of 1:7,000,000, the distance between Shenzhen and Guangzhou is measured as 2 centimeters. What is the actual distance in kilometers between Shenzhen and Guangzhou?
在比例尺是1：7000000的地图上，量得深圳和广州两地的距离为2厘米，深圳与广州的实际距离是多少千米．
<gadget id="calculator">1 / 7_000_000</gadget>
<output>1/7_000_000 = around 0</output>

<gadget id="calculator">2 / (1/7_000_000) / 100_000</gadget>
<output>140</output>

<result>140</result>