A project can be completed in 8 days by A alone, and 10 days by B alone. If A completes the remaining project after 2 days alone, how many days will B need?
一项工程甲独做8天完成，乙独做10天完成，如果甲独做2天后剩下的工程由乙完成，乙需要几天？
<gadget id="calculator">1 / 8</gadget>
<output>1/8 = around 0.125</output>

<gadget id="calculator">(1/8) * 2</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 - (1/4)</gadget>
<output>3/4 = around 0.75</output>

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

<gadget id="calculator">(3/4) / (1/10)</gadget>
<output>15/2 = around 7.5</output>

<result>15/2 = around 7.5</result>