It takes 10 hours for A to process a batch of parts alone, and B’s work efficiency is 5/6 of A’s. After 3 hours of cooperation between the two, B will complete the rest. How many hours will it take?
加工一批零件，甲单独做要10小时，乙的工作效率是甲的(5/6)，两人合作3小时后，剩下的由乙来完成，还要几小时？
<gadget id="calculator">1 / 10</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">5 / 6</gadget>
<output>5/6 = around 0.833333</output>

<gadget id="calculator">(1/10) * (5/6)</gadget>
<output>1/12 = around 0.083333</output>

<gadget id="calculator">(1/10) + (1/12)</gadget>
<output>11/60 = around 0.183333</output>

<gadget id="calculator">(11/60) * 3</gadget>
<output>11/20 = around 0.55</output>

<gadget id="calculator">1 - (11/20)</gadget>
<output>9/20 = around 0.45</output>

<gadget id="calculator">(9/20) / (1/12)</gadget>
<output>27/5 = around 5.4</output>

<result>27/5 = around 5.4</result>