On a map with a scale of 1:3500000, the measured distance from A to B is 20 cm. How many kilometers is the actual distance between the two places?
在比例尺为1：3500000的地图上，量得A到B的距离是20厘米，两地间实际距离是多少千米？
<gadget id="calculator">1 / 3_500_000</gadget>
<output>1/3_500_000 = around 0</output>

<gadget id="calculator">20 / (1/3_500_000) / 100_000</gadget>
<output>700</output>

<result>700</result>