A map is marked with a scale of 1:70,000,000; if the distance between Quanzhou and Fuzhou is measured as 4.9 cm on this map, then how many kilometers is the actual distance between these two places?
在一幅地图上标有比例尺1：70000000；如果在这幅地图上量得泉州到福州的距离为4.9厘米，那么这两地的实际距离是多少千米．
<result>3_400</result>