The distance between A and B is 150 kilometers, and the distance between A and B is 5 cm measured on a map. At the same time, the distance between the two cities B and C is 7 centimeters measured on this picture. What is the actual distance between the two cities B and C in kilometers?
甲乙两城相距150千米，在一幅地图上量得甲、乙两城之间的距离市5厘米．同时在这幅图上量得乙、丙两城之间的距离是7厘米，乙、丙两城的实际距离是多少千米．
<gadget id="calculator">50 * 7</gadget>
<output>350</output>

<result>350</result>