The workers of the Electric Power Bureau installed a batch of electric poles, 24 poles per day, and it took 15 days to complete. If 12 more sticks are installed every day, how many days can it be completed?
电业局工人装一批电杆，每天装24根，15天可以完成．如果每天多装12根，多少天可以完成？
<gadget id="calculator">24 + 12</gadget>
<output>36</output>

<gadget id="calculator">15 / 36</gadget>
<output>5/12 = around 0.416667</output>

<gadget id="calculator">24 * (5/12)</gadget>
<output>10</output>

<result>10</result>