Careless when calculating, divide a number by 2 and subtract 4, mistook it as multiplying by 2 and adding 4, the number is 36, what is the correct result?
小粗心在计算时，把一个数除以2减4，误看成乘2加4，得数是36，正确的结果是多少．
<gadget id="calculator">36 - 4</gadget>
<output>32</output>

<gadget id="calculator">32 / 2</gadget>
<output>16</output>

<gadget id="calculator">16 / 2</gadget>
<output>8</output>

<gadget id="calculator">8 - 4</gadget>
<output>4</output>

<result>4</result>