A car travels the entire distance (4/7) from point A to point B, and there are 84 kilometers left. How many kilometers has this car traveled?
一辆汽车从甲地到乙地，行了全程的(4/7)，还剩84千米，这辆汽车行了多少千米？
<gadget id="calculator">4 / 7</gadget>
<output>4/7 = around 0.571429</output>

<gadget id="calculator">1 - (4/7)</gadget>
<output>3/7 = around 0.428571</output>

<gadget id="calculator">84 / (3/7)</gadget>
<output>196</output>

<gadget id="calculator">196 - 84</gadget>
<output>112</output>

<result>112</result>