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 ratio of work efficiency between A and B is 5:3, how many days will it take for A to complete the task assigned to him?
一批零件平均分给甲、乙两人同时加工，两人工作了5天，共完成这批零件的(2/3)．已知甲与乙工作效率的比是5：3，问甲还要几天才能完成分配给自已的任务？
<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">5 / 8</gadget>
<output>5/8 = around 0.625</output>

<gadget id="calculator">(2/3) * (5/8)</gadget>
<output>5/12 = around 0.416667</output>

<gadget id="calculator">(1/2) - (5/12)</gadget>
<output>1/12 = around 0.083333</output>

<gadget id="calculator">(2/3) / 5</gadget>
<output>2/15 = around 0.133333</output>

<gadget id="calculator">(2/15) * (5/8)</gadget>
<output>1/12 = around 0.083333</output>

<gadget id="calculator">(1/12) / (1/12)</gadget>
<output>1</output>

<result>1</result>