The number of peach trees is 1/2 that of apple trees, how much more apple trees than peach trees
桃树的棵数是苹果树的(1/2)，苹果树比桃树多多少
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">1 - (1/2)</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">(1/2) / (1/2)</gadget>
<output>1</output>

<result>1</result>