The newly built Canton Tower is currently the tallest TV tower in the world. It is 610 meters high, 205 meters higher than the Beijing Central Radio and Television Tower. How many meters is the Beijing Central Radio and Television Tower?
新建成的广州塔是目前世界最高的电视塔，它高610米，比北京的中央广播电视塔还要高出205米，北京中央广播电视塔高多少米？
<gadget id="calculator">610 - 205</gadget>
<output>405</output>

<result>405</result>