In a piece of land, use (4/7) to grow cucumbers, (2/7) to grow eggplants, and the rest to grow peppers. What percentage of the land is the area for growing peppers?
一块地，用它的(4/7)种黄瓜，(2/7)种茄子，其余的种辣椒，种辣椒的面积占这块地的几分之几？
<gadget id="calculator">4 / 7</gadget>
<output>4/7 = around 0.571429</output>

<gadget id="calculator">2 / 7</gadget>
<output>2/7 = around 0.285714</output>

<gadget id="calculator">1 - (4/7) - (2/7)</gadget>
<output>1/7 = around 0.142857</output>

<result>1/7 = around 0.142857</result>