distance is 120 kilometers long. The whole journey (1/4) was done on the first day, and (1/5) the whole journey was done on the second day. How many kilometers are there to the finish line after two days?
一段路程长120千米．第一天行了全程的(1/4)，第二天行了全程的(1/5)，两天后距离终点还有多少千米？
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 - (1/4) - (1/5)</gadget>
<output>11/20 = around 0.55</output>

<gadget id="calculator">120 * (11/20)</gadget>
<output>66</output>

<result>66</result>