In a piece of land, (1/12) grows corn, (5/12) grows vegetables, and the rest grows watermelons. What percentage of the land is planted with watermelons?
一块地，(1/12)种玉米，(5/12)种青菜，其余种西瓜．种西瓜的面积占这块地的几分之几？
<gadget id="calculator">1 / 12</gadget>
<output>1/12 = around 0.083333</output>

<gadget id="calculator">5 / 12</gadget>
<output>5/12 = around 0.416667</output>

<gadget id="calculator">1 - (1/12) - (5/12)</gadget>
<output>1/2 = around 0.5</output>

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