The actual distance from Shanghai to Yan'an is 1258 kilometers, how many centimeters should it be on a map with a scale of 1:37000000.
上海到延安的实际距离是1258千米，在一幅比例尺是1：37000000的地图上应是多少厘米．
<gadget id="calculator">1 / 37_000_000</gadget>
<output>1/37_000_000 = around 0</output>

<gadget id="calculator">1_258 * 100_000 * (1/37_000_000)</gadget>
<output>17/5 = around 3.4</output>

<result>17/5 = around 3.4</result>