In a vegetable field (5/6) hectares, (1/4) of this field is planted with cucumbers, (1/6) is planted with tomatoes, and the rest is planted with green vegetables. What percentage of the area of green vegetables occupies this land?
一块菜地(5/6)公顷，把这块地的(1/4)中黄瓜，(1/6)种西红柿，剩下的种青菜，青菜面积占这块地几分之几？
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

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

<gadget id="calculator">(1/4) + (1/6)</gadget>
<output>5/12 = around 0.416667</output>

<gadget id="calculator">1 - (5/12)</gadget>
<output>7/12 = around 0.583333</output>

<result>7/12 = around 0.583333</result>