The cargo ship Yellow River sails from port A to port B, the distance between the two ports is 120 kilometers, and the distance traveled is (1/5) of the remaining distance. How many kilometers is this freighter away from Port B?
黄河号货轮从甲港开往乙港，两港间距离120千米，已经航行的路程是剩下航程的(1/5)．这艘货轮离乙港还有多少千米？
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 + (1/5)</gadget>
<output>6/5 = around 1.2</output>

<gadget id="calculator">120 / (6/5)</gadget>
<output>100</output>

<result>100</result>