A train departs from station A to station B, the whole journey (5/7), and it is 162 kilometers away from station B. How many kilometers has the train traveled?
一列火车从甲站开往乙站，行全程的(5/7)，还距乙站有162千米．这列火车已经行了多少千米？
<gadget id="calculator">5 / 7</gadget>
<output>5/7 = around 0.714286</output>

<gadget id="calculator">1 - (5/7)</gadget>
<output>2/7 = around 0.285714</output>

<gadget id="calculator">162 / (2/7)</gadget>
<output>567</output>

<gadget id="calculator">567 * (5/7)</gadget>
<output>405</output>

<result>405</result>