The number of peach trees is (5/4) the number of pear trees, then the number of pear trees is ((())/(())) of peach trees.
桃树的棵数是梨树棵数的(5/4)，那么梨树的棵数是桃树的((())/(()))．
<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<result>4/5 = around 0.8</result>