The ratio of peach trees to pear trees is 9:8, how much fewer pear trees are there than peach trees
桃树和梨树棵数比是9：8，梨树比桃树少多少
<gadget id="calculator">9 - 8</gadget>
<output>1</output>

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

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