An engineering team repaired a road, and repaired (3/4) kilometers in the first month, and repaired (3/5) kilometers more in the second month than in the first month, and finally left (13/20) kilometers , how many kilometers is this highway in total?
某工程队修一条公路，第一个月修了(3/4)千米，第二个月比第一个月多修(3/5)千米，最后还剩下(13/20)千米，这条公路全长多少千米？
<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">13 / 20</gadget>
<output>13/20 = around 0.65</output>

<gadget id="calculator">(3/4) + (3/5) + (3/4) + (13/20)</gadget>
<output>11/4 = around 2.75</output>

<result>11/4 = around 2.75</result>