If a&b=a+b/10, then 2&5=how much.
如果a&b=a+b/10，那么2&5=多少．
<gadget id="calculator">5 / 10</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">2 + (1/2)</gadget>
<output>5/2 = around 2.5</output>

<result>5/2 = around 2.5</result>