A nursery, in which (1/4) cultivates locust saplings, (1/5) cultivates willow saplings, and the rest raises apple saplings. What percentage of the land do apple saplings occupy?
一块苗圃，其中(1/4)育槐树苗，(1/5)育柳树苗，其余育苹果树苗．苹果树苗占地几分之几？
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 - (1/4) - (1/5)</gadget>
<output>11/20 = around 0.55</output>

<result>11/20 = around 0.55</result>