A piece of land, of which (2/7) is planted with beans, (3/5) is planted with cotton, and the rest are planted with cabbage. What percentage of the land is planted with Chinese cabbage?
一块地，其中(2/7)种豆角，(3/5)种棉花，其余的种小白菜．种小白菜的面积占这块地的几分之几？
<gadget id="calculator">2 / 7</gadget>
<output>2/7 = around 0.285714</output>

<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">1 - (2/7) - (3/5)</gadget>
<output>4/35 = around 0.114286</output>

<result>4/35 = around 0.114286</result>