To do a project, teams A and B can complete it in 10 days. Now A worked for 3 days and B continued to work for 2 days, completing (1/4) of the whole project. How many days will it take for the entire project to be completed by Team A alone?
做一项工程，甲、乙两队合作10天可以完成．现在甲干了3天后乙接着干了2天，完成全部工程的(1/4)．全部工程由甲队单独于需要多少天才能完成？
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 / 10</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">(1/10) * 2</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">(1/4) - (1/5)</gadget>
<output>1/20 = around 0.05</output>

<gadget id="calculator">1 / (1/20)</gadget>
<output>20</output>

<result>20</result>