In the formula ((□-4)*2+8)/3=6, what number should be filled in □.
有算式((□-4)*2+8)/3=6中，□处应填入的数是多少．
<gadget id="calculator">6 * 3</gadget>
<output>18</output>

<gadget id="calculator">18 - 8</gadget>
<output>10</output>

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

<gadget id="calculator">5 + 4</gadget>
<output>9</output>

<result>9</result>