A canal can be dug by team A alone in 12 days and by team B in 8 days alone. How many days will it take for teams A and B to jointly dig this canal (5/6)?
一条水渠，甲队单独挖12天可以完成，乙队单独挖8天可以完成．甲、乙两队合挖这条水渠的(5/6)，需要多少天？
<gadget id="calculator">5 / 6</gadget>
<output>5/6 = around 0.833333</output>

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

<gadget id="calculator">1 / 8</gadget>
<output>1/8 = around 0.125</output>

<gadget id="calculator">(1/12) + (1/8)</gadget>
<output>5/24 = around 0.208333</output>

<gadget id="calculator">(5/6) / (5/24)</gadget>
<output>4</output>

<result>4</result>