An orchard is planted with apple trees (3/20), peach trees (1/5), and pear trees (4/15). Please ask two questions and answer them.
一个果园中种苹果树的面积占它的(3/20)，种桃树占它的(1/5)，种梨树占它的(4/15)．请你提出两个问题并解答．
<gadget id="calculator">4 / 15</gadget>
<output>4/15 = around 0.266667</output>

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

<gadget id="calculator">(4/15) - (1/5)</gadget>
<output>1/15 = around 0.066667</output>

<result>1/15 = around 0.066667</result>