The newly bought house of Xiaohong’s family needs to be renovated. It is planned to have 10 workers, and the decoration can be completed in 24 days; because the construction period is ahead of schedule, it will take 20 days to complete the decoration. How many workers should be added?
小红家新买的房子要装修，计划10个工人，24天可以装修完工；由于工期提前，要20天装修完工．要增加几个工人？
<gadget id="calculator">1 * 10 * 24</gadget>
<output>240</output>

<gadget id="calculator">240 / 20 / 1</gadget>
<output>12</output>

<gadget id="calculator">12 - 10</gadget>
<output>2</output>

<result>2</result>