The engineering team planned to dig (3/7) kilometers of canals, but actually dug (1/6) more than planned, how many kilometers were actually dug.
工程队计划挖水渠(3/7)千米，实际比计划多挖(1/6)，实际挖多少千米．
<gadget id="calculator">3 / 7</gadget>
<output>3/7 = around 0.428571</output>

<gadget id="calculator">1 / 6</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">(3/7) * (1/6)</gadget>
<output>1/14 = around 0.071429</output>

<gadget id="calculator">(1/14) + (3/7)</gadget>
<output>1/2 = around 0.5</output>

<result>1/2 = around 0.5</result>