construction team originally planned to build (11/10) kilometers of roads in July, but in the first half of the month (4/5) kilometers of roads were built, and in the second half of the month (13/20) kilometers of roads. How many kilometers did it actually exceed the plan?
一个建筑队原计划七月份筑路(11/10)千米，结果上半月筑路(4/5)千米，下半月筑路(13/20)千米．实际超过计划多少千米？
<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

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

<gadget id="calculator">(4/5) + (13/20)</gadget>
<output>29/20 = around 1.45</output>

<gadget id="calculator">11 / 10</gadget>
<output>11/10 = around 1.1</output>

<gadget id="calculator">(29/20) - (11/10)</gadget>
<output>7/20 = around 0.35</output>

<result>7/20 = around 0.35</result>