An orchard has (4/5) hectares, pear trees occupy (3/5) of the orchard, and the rest are apple trees, and apple trees occupy ((())/(())) of the orchard.
一个果园有(4/5)公顷，梨树占果园的(3/5)，剩下的是苹果树，苹果树占果园的((())/(()))．
<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">1 - (3/5)</gadget>
<output>2/5 = around 0.4</output>

<result>2/5 = around 0.4</result>