Xiao Ming arranges the meeting place, and the prepared chairs are short of 8. If half of the original number of chairs is increased, there will be 12 more chairs. Excuse me, how many people will attend the meeting.
小明布置会场，准备的椅子缺少8把，如果增加原来椅子数量的一半，则椅子又多余12把，请问，参加会议的有多少人．
<gadget id="calculator">8 + 12</gadget>
<output>20</output>

<gadget id="calculator">20 / 0.5</gadget>
<output>40</output>

<gadget id="calculator">40 + 8</gadget>
<output>48</output>

<result>48</result>