If 4x-6=0, then (8.5+x)/0.1=how much.
如果4x-6=0，那么(8.5+x)/0.1=多少．
<gadget id="calculator">6 + 0</gadget>
<output>6</output>

<gadget id="calculator">6 / 4</gadget>
<output>3/2 = around 1.5</output>

<gadget id="calculator">8.5 + (3/2)</gadget>
<output>10</output>

<gadget id="calculator">10 / 0.1</gadget>
<output>100</output>

<result>100</result>