A batch of parts is equally distributed to A and B to process at the same time. They work for 5 days and complete (2/3) of this batch of parts. It is known that the efficiency ratio of A and B is 5:3, and it will take a few days for B To complete assigned tasks?
把一批零件平均分给甲乙两人同时加工，两人工作5天，共完成这批零件的(2/3)，已知甲与乙的效率比是5：3，求乙还要几天才能完成分到的任务？
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">3 + 5</gadget>
<output>8</output>

<gadget id="calculator">3 / 8</gadget>
<output>3/8 = around 0.375</output>

<gadget id="calculator">(2/3) * (3/8)</gadget>
<output>1/4 = around 0.25</output>

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

<gadget id="calculator">5 / 3</gadget>
<output>5/3 = around 1.666667</output>

<gadget id="calculator">5 * (5/3)</gadget>
<output>25/3 = around 8.333333</output>

<gadget id="calculator">5 + (25/3)</gadget>
<output>40/3 = around 13.333333</output>

<gadget id="calculator">(2/3) / (40/3)</gadget>
<output>1/20 = around 0.05</output>

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

<result>5</result>