A number, add 2, divide by 4, and multiply by 8, the result is 16. what is this number
一个数，加上2，再除以4，最后乘8，结果为16．这个数是多少
<gadget id="calculator">16 / 8</gadget>
<output>2</output>

<gadget id="calculator">2 * 4</gadget>
<output>8</output>

<gadget id="calculator">8 - 2</gadget>
<output>6</output>

<result>6</result>