On a map with a scale of 1:2000000, the distance from Ningguo to Xuancheng is measured to be 2.8 cm. What is the actual distance from Ningguo to Xuancheng?
在一幅比例尺是1：2000000的地图上，量得宁国到宣城的距离是2.8厘米，宁国到宣城的实际距离是多少？
<gadget id="calculator">1 / 2_000_000</gadget>
<output>1/2_000_000 = around 0</output>

<gadget id="calculator">2.8 / (1/2_000_000) / 100_000</gadget>
<output>56</output>

<result>56</result>