In November, it is planned to build a canal with a length of 8.4 kilometers. The actual construction is 0.14 kilometers more than the plan every day. How many days can it be completed?
十一月份计划修一条长8.4千米的水渠，实际每天比计划多修0.14千米，实际多少天可以完工？
<gadget id="calculator">8.4 / 30</gadget>
<output>0.28</output>

<gadget id="calculator">0.28 + 0.14</gadget>
<output>0.42</output>

<gadget id="calculator">8.4 / 0.42</gadget>
<output>20</output>

<result>20</result>