To build a 1,260-meter-long canal, 100 people can complete the project in 6 days. Now add 20 people, how many days can it be completed?
修一条长1260米的水渠，100人6天可以完工，现在增加20人，多少天可以完工？
<gadget id="calculator">1_260 / 6 / 100</gadget>
<output>21/10 = around 2.1</output>

<gadget id="calculator">100 + 20</gadget>
<output>120</output>

<gadget id="calculator">(21/10) * 120</gadget>
<output>252</output>

<gadget id="calculator">1_260 / 252</gadget>
<output>5</output>

<result>5</result>