It has been 5 days to build a road with a length of 130 kilometers, with an average of 12 kilometers per day. The rest will take 7 days to complete, how many kilometers will be repaired on average every day? (Use the equation first, then solve it arithmetically)
修一条长130千米的公路，已经修了5天，平均每天修12千米．余下的要7天完成，平均每天要修多少千米？(先用方程，再用算术方法解)
<gadget id="calculator">130 - 60</gadget>
<output>70</output>

<gadget id="calculator">70 / 7</gadget>
<output>10</output>

<result>10</result>