To build a road, (7/8) kilometers were repaired on the first day, (1/3) kilometers were repaired on the second day, and (3/10) kilometers remained. How many kilometers will the road be after the construction is completed?
修一条公路，第一天修了(7/8)千米，第二天修了(1/3)千米，还剩(3/10)千米，这条公路修完后长多少千米？
<gadget id="calculator">7 / 8</gadget>
<output>7/8 = around 0.875</output>

<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">3 / 10</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">(7/8) + (1/3) + (3/10)</gadget>
<output>181/120 = around 1.508333</output>

<result>181/120 = around 1.508333</result>