The engineering team built a 7.8-kilometer road. The original plan was to build 0.65 kilometers per day, but the actual construction was 0.13 kilometers more than planned every day. How many days earlier than planned can this be completed?
工程队修一条7.8千米的公路，原计划每天修0.65千米，实际每天比计划多修0.13千米，这样可以比计划提前几天完成？
<gadget id="calculator">7.8 / 0.65</gadget>
<output>12</output>

<gadget id="calculator">0.65 + 0.13</gadget>
<output>0.78</output>

<gadget id="calculator">7.8 / 0.78</gadget>
<output>10</output>

<gadget id="calculator">12 - 10</gadget>
<output>2</output>

<result>2</result>