The actual distance between A and B is 160 kilometers, and it is drawn on a map with a scale of (1/4000000), what is the distance in centimeters on the map?
甲、乙两城实际距离为160千米，画在比例尺为(1/4000000)的地图上，图上距离是多少厘米．
<gadget id="calculator">1 / 4_000_000</gadget>
<output>1/4_000_000 = around 0</output>

<gadget id="calculator">160 * 100_000 * (1/4_000_000)</gadget>
<output>4</output>

<result>4</result>