On a map, the straight-line distance between A and B is 24cm, and the straight-line distance between A and C is 30cm. If the actual distance between A and B is 1200 km, then how many kilometers is the actual distance between A and C?
在一幅地图上，量得甲、乙两地的直线距离为24cm，甲、丙两地的直线距离为30cm．如果甲、乙两地的实际距离是1200km，那么甲、丙两地的实际距离是多少千米？
<gadget id="calculator">24 / 120_000_000</gadget>
<output>1/5_000_000 = around 0</output>

<gadget id="calculator">30 / (1/5_000_000) / 100_000</gadget>
<output>1_500</output>

<result>1_500</result>