A road has been repaired (3/5) kilometers, and the rest is less than the repaired (1/4) kilometers, how many kilometers is the total length of this road?
一条公路，已经修了(3/5)千米，剩下的比已修的少(1/4)千米，这条公路全长多少千米？
<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">(3/5) - (1/4)</gadget>
<output>7/20 = around 0.35</output>

<gadget id="calculator">(3/5) + (7/20)</gadget>
<output>19/20 = around 0.95</output>

<result>19/20 = around 0.95</result>