The following X=how much is the solution of the equation (X-3)/2=7.5.
下面X=多少是方程(X-3)/2=7.5的解．
<gadget id="calculator">3 / 2</gadget>
<output>3/2 = around 1.5</output>

<gadget id="calculator">(3/2) + 7.5</gadget>
<output>9</output>

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

<gadget id="calculator">9 / (1/2)</gadget>
<output>18</output>

<result>18</result>