Zhang Xinyi's family has 9 plots of the same size in QQ Farm, 5 plots are planted with vegetables, 2 plots are planted with cabbage, and 1 plot is planted with tomatoes. How much of the plot is left without vegetables?
张欣怡家在QQ农场有9块同样大小的地，5块种了青菜，2块种了白菜，1块种了西红柿，还剩几分之几的地没有种菜？
<gadget id="calculator">5 / 9</gadget>
<output>5/9 = around 0.555556</output>

<gadget id="calculator">2 / 9</gadget>
<output>2/9 = around 0.222222</output>

<gadget id="calculator">1 / 9</gadget>
<output>1/9 = around 0.111111</output>

<gadget id="calculator">(5/9) + (2/9) + (1/9)</gadget>
<output>8/9 = around 0.888889</output>

<gadget id="calculator">1 - (8/9)</gadget>
<output>1/9 = around 0.111111</output>

<result>1/9 = around 0.111111</result>