It will take 12 days for a highway to be repaired jointly by teams A and B. Now Team A will repair it for 3 days first, and Team B will continue to repair it for 2 days, and (1/5) of this road is completed. If Team A can repair this road alone in a few days?
一条公路，由甲乙两队合修要12天完成．现在先由甲队修3天，乙队再接着修2天，修完了这条公路的(1/5)．如果甲队单独修几天可以修完这条公路？
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 / 12</gadget>
<output>1/12 = around 0.083333</output>

<gadget id="calculator">(1/12) * 2</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">(1/5) - (1/6)</gadget>
<output>1/30 = around 0.033333</output>

<gadget id="calculator">3 - 2</gadget>
<output>1</output>

<gadget id="calculator">(1/30) / 1</gadget>
<output>1/30 = around 0.033333</output>

<gadget id="calculator">1 / (1/30)</gadget>
<output>30</output>

<result>30</result>