The actual distance from Fuzhou to Xiamen is 280 kilometers. If it is drawn on the map at a scale of 1:4,000,000, what is the distance in centimeters between the two places on the map?
从福州到厦门的实际距离是280千米，用1：4000000的比例尺画在图上，那么这两地的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">280 * 100_000 * (1/4_000_000)</gadget>
<output>7</output>

<result>7</result>