If 3x+4=16, then 5x/2=what
若3x+4=16，则5x/2=多少
<gadget id="calculator">16 - 4</gadget>
<output>12</output>

<gadget id="calculator">12 / 3 / 2</gadget>
<output>2</output>

<gadget id="calculator">5 * 2</gadget>
<output>10</output>

<result>10</result>