A water canal was built in Wangcun, an average of 1.05 kilometers per day in the first 4 days, and 5.16 kilometers in the next 5 days. How many kilometers of water canals were built on average per day?
王村修一条水渠，前4天平均每天修1.05千米，后5天修5.16千米，平均每天修水渠多少千米？
<gadget id="calculator">1.05 * 4</gadget>
<output>4.2</output>

<gadget id="calculator">4.2 + 5.16</gadget>
<output>9.36</output>

<gadget id="calculator">4 + 5</gadget>
<output>9</output>

<gadget id="calculator">9.36 / 9</gadget>
<output>1.04</output>

<result>1.04</result>