{((2+3)/(1/2)+2)/(1/2)+1}/(1/2).
{((2+3)/(1/2)+2)/(1/2)+1}/(1/2)．
<gadget id="calculator">2 + 3</gadget>
<output>5</output>

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

<gadget id="calculator">5 / (1/2)</gadget>
<output>10</output>

<gadget id="calculator">10 + 2</gadget>
<output>12</output>

<gadget id="calculator">12 / (1/2)</gadget>
<output>24</output>

<gadget id="calculator">24 + 1</gadget>
<output>25</output>

<gadget id="calculator">25 / (1/2)</gadget>
<output>50</output>

<result>50</result>