A car has traveled 126 kilometers from Chengde, and there is still (2/5) of the distance to Beijing. So how many kilometers is the total distance from Chengde to Beijing?
一辆车从承德出发行驶了126千米，距北京还剩(2/5)的路程，那么承德到北京全程一共有多少千米？
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">1 - (2/5)</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">126 / (3/5)</gadget>
<output>210</output>

<result>210</result>