A car travels the entire distance (1/3) from point A to point B, and there are 84 kilometers left. How many kilometers has the car traveled?
一辆汽车从甲地到乙地，行了全程的(1/3)，还剩84千米．这辆汽车行了多少千米？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">1 - (1/3)</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">84 / (2/3)</gadget>
<output>126</output>

<gadget id="calculator">126 - 84</gadget>
<output>42</output>

<result>42</result>