On a map of China with a scale of 1:35 million, the distance from Beijing to Harbin is measured to be 2.5 cm. What is the actual distance in kilometers from Beijing to Harbin?
在比例尺是1：35000000的中国地图上，量得北京到哈尔滨的距离是2.5厘米，北京到哈尔滨的实际距离是多少千米？
<gadget id="calculator">1 / 35_000_000</gadget>
<output>1/35_000_000 = around 0</output>

<gadget id="calculator">2.5 / (1/35_000_000) / 100_000</gadget>
<output>875</output>

<result>875</result>