To build a canal, an average of 0.25km per day will be built in the first 5 days, and a total of 2.65km will be built in the next 8 days. How many kilometers will be repaired on average per day for this canal?
修一条水渠，前5天平均每天修0.25km，后8天共修2.65km，修这条水渠平均每天修多少千米？
<gadget id="calculator">0.25 * 5</gadget>
<output>1.25</output>

<gadget id="calculator">1.25 + 2.65</gadget>
<output>3.9</output>

<gadget id="calculator">5 + 8</gadget>
<output>13</output>

<gadget id="calculator">3.9 / 13</gadget>
<output>0.3</output>

<result>0.3</result>