A car travels 80 kilometers, which happens to be the whole journey (4/5), how many kilometers is the whole journey?
一辆汽车行驶了80千米，正好是全程的(4/5)，求全程是多少千米？
<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">80 / (4/5)</gadget>
<output>100</output>

<result>100</result>